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15. Solve this equation: [tex]-9h - 6 + 12h + 40 = 22[/tex].

A. [tex]h = -\frac{4}{7}[/tex]
B. [tex]h = 4[/tex]
C. [tex]h = -4[/tex]
D. [tex]h = 24[/tex]


Sagot :

To solve the equation [tex]\(-9h - 6 + 12h + 40 = 22\)[/tex], let's go through the solution step-by-step:

1. Combine like terms:
[tex]\[ (-9h + 12h) + (-6 + 40) = 22 \][/tex]
Simplify the terms inside the parentheses:
[tex]\[ 3h + 34 = 22 \][/tex]

2. Isolate the variable term:
Subtract 34 from both sides of the equation to isolate the term involving [tex]\( h \)[/tex]:
[tex]\[ 3h + 34 - 34 = 22 - 34 \][/tex]
Simplify the equation:
[tex]\[ 3h = -12 \][/tex]

3. Solve for [tex]\( h \)[/tex]:
Divide both sides by 3 to solve for [tex]\( h \)[/tex]:
[tex]\[ h = \frac{-12}{3} \][/tex]
Simplify the fraction:
[tex]\[ h = -4 \][/tex]

So, the solution to the equation is [tex]\( h = -4 \)[/tex].

Thus, the correct answer is:

C. [tex]\( h = -4 \)[/tex]