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Five times the sum of a number and one is 115. What is the number? Use x as your variable.

Sagot :

The initial equation is:
[tex]5(x+1)=115[/tex]

Let's transform it for x:
[tex]5x+5=115[/tex]

... distract 5:
[tex]5x=110[/tex]

... divide both sides by 5:
[tex]x=22[/tex]
Write the follow equation accordin the text of the task:

[tex]5(x+1)=115[/tex]

Solve the equation:

[tex]5(x+1)=115\\ \\ 5x+5=115\\ \\ 5x=115-5\\ \\ 5x=110\\ \\ x=\frac{110}{5}\\ \\ x=22[/tex]