Sagot :
Answer:
[tex]x = - 6[/tex]
[tex]x = 12[/tex]
[tex]x = 8[/tex]
[tex]x = - 21[/tex]
[tex]x = 18[/tex]
[tex]x = - 2[/tex]
[tex]x = 40[/tex]
[tex]x = - 3[/tex]
[tex]x = -21[/tex]
[tex]x = 2[/tex]
[tex]x = - 18[/tex]
[tex]x = - 7[/tex]
[tex]x = 6[/tex]
[tex]x = 10[/tex]
[tex]x = 3[/tex]
Step-by-step explanation:
[tex]1.[/tex]
[tex] - 7x + 16 = 58[/tex]
[tex] - 7x = 58 - 16[/tex]
[tex] - 7x = 42[/tex]
[tex] \frac{ - 7x}{ - 7} = \frac{42}{ - 7} [/tex]
[tex]x = \frac{ 42}{ - 7} [/tex]
[tex]x = - 6[/tex]
[tex]2.[/tex]
[tex] - 2x + 15 = - 9[/tex]
[tex] - 2x = - 9 - 15[/tex]
[tex] - 2x = - 24[/tex]
[tex] \frac{ - 2x}{ - 2} = \frac{ - 24}{ - 2} [/tex]
[tex]x = \frac{ - 24}{ - 2} [/tex]
[tex]x = 12[/tex]
[tex]3.[/tex]
[tex]5x - 4 = 36[/tex]
[tex]5x = 36 + 4[/tex]
[tex]5x = 40[/tex]
[tex] \frac{5x}{5} = \frac{40}{5} [/tex]
[tex]x = \frac{40}{5} [/tex]
[tex]x = 8[/tex]
[tex]4.[/tex]
[tex]25 - 3x = 88[/tex]
[tex] - 3x = 88 - 25[/tex]
[tex] - 3x = 63[/tex]
[tex] \frac{ - 3x}{ - 3} = \frac{63}{ - 3} [/tex]
[tex]x = \frac{63}{ - 3} [/tex]
[tex]x = - 21[/tex]
[tex]5.[/tex]
[tex] - 11 = 7 - x[/tex]
[tex]7 - x = - 11[/tex]
[tex] - x = - 11 - 7[/tex]
[tex] - x = - 18[/tex]
[tex] \frac{ - x}{ - 1} = \frac{ - 18}{ - 1} [/tex]
[tex]x = \frac{ - 18}{ - 1} [/tex]
[tex]x = 18[/tex]
[tex]6.[/tex]
[tex]65 + 15x = 35[/tex]
[tex]15x = 35 - 65[/tex]
[tex]15x = - 30[/tex]
[tex] \frac{15x}{15} = \frac{ - 30}{15} [/tex]
[tex]x = \frac{ - 30}{15} [/tex]
[tex]x = - 2[/tex]
[tex]7.[/tex]
[tex] \frac{1}{2} x - 18 = 2[/tex]
[tex] \frac{1}{2} x = 2 + 18[/tex]
[tex] \frac{1}{2} x = 20[/tex]
[tex] \frac{1}{2} \times 2x = 20 \times 2[/tex]
[tex]x = 40[/tex]
[tex]8.[/tex]
[tex] \frac{2}{3} x - 10 = - 12[/tex]
[tex] \frac{2}{3} x = - 12 + 10[/tex]
[tex] \frac{2}{3} x = - 2[/tex]
[tex]x = - 2( \frac{3}{2} )[/tex]
[tex]x = - 3[/tex]
[tex]9.[/tex]
[tex]6 - \frac{1}{3} x = - 1[/tex]
[tex] - \frac{ 1}{3} x = - 1 - 6[/tex]
[tex] - \frac{1}{3} x = - 7[/tex]
[tex]x = - 7( - \frac{3}{1} x)[/tex]
[tex]x = 21[/tex]
[tex]10.[/tex]
[tex]4 - 9 x= - 14[/tex]
[tex]-9x = - 14 - 4[/tex]
[tex]-9x = - 18[/tex]
[tex] \frac{-9x}{-9} = \frac{ - 18}{-9} [/tex]
[tex]x = \frac{ - 18}{-9} [/tex]
[tex]x = 2[/tex]
[tex]11.[/tex]
[tex]11 - x = 29[/tex]
[tex] - x = 29 - 11[/tex]
[tex] - x = 18[/tex]
[tex] \frac{ - x}{ - 1} = \frac{18}{ - 1} [/tex]
[tex]x = \frac{ 18}{ - 1} [/tex]
[tex]x = - 18[/tex]
[tex]12.[/tex]
[tex] - 9- 11 x= 68[/tex]
[tex] - 11x = 68 + 9[/tex]
[tex] - 11x = 77[/tex]
[tex] \frac{ - 11x}{ - 11} = \frac{77}{ - 11} [/tex]
[tex]x = \frac{77}{ - 11} [/tex]
[tex]x = - 7[/tex]
[tex]13.[/tex]
[tex]45 + \frac{5}{6} x = 50[/tex]
[tex] \frac{5}{6} x = 50 - 45[/tex]
[tex] \frac{5}{6} x = 5[/tex]
[tex] x = 5( \frac{6}{5} )[/tex]
[tex]x = 6[/tex]
[tex]14.[/tex]
[tex] - 5x + 17 = - 33[/tex]
[tex] - 5x = - 33 - 17[/tex]
[tex] - 5x = - 50[/tex]
[tex] \frac{ - 5x}{ - 5} = \frac{ - 50}{ - 5}[/tex]
[tex]x = \frac{ - 50}{ - 5} [/tex]
[tex]x = 10[/tex]
[tex]15.[/tex]
[tex]95 = - 4 + 33x[/tex]
[tex] - 4 + 33x = 95[/tex]
[tex]33x = 95 + 4[/tex]
[tex]33x = 99[/tex]
[tex] \frac{33x}{33} = \frac{99}{33} [/tex]
[tex]x = \frac{99}{33} [/tex]
[tex]x = 3[/tex]
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