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4 votes
Solve for x :
5x+8=7x-72​

2 Answers

5 votes

Answer:

x = 40

Explanation:

We just have to manipulate the terms, putting each term that has the variable "x" on one side of the equation like this:

5x + 8 = 7x - 72​

5x - 7x = - 72 - 8​

-2x = -80

x = -80/--2

x = 40

User Daemonofchaos
by
8.3k points
7 votes

Answer:

x = 40

Explanation:

Given equation:


5x+8=7x-72

Add 72 to both sides:


\implies 5x+8+72=7x-72+72


\implies 5x+80=7x

Subtract 5x from both sides:


\implies 5x+80-5x=7x-5x


\implies 80=2x

Divide both sides by 2:


\implies (80)/(2)=(2x)/(2)


\implies 40=x

Therefore, the solution to the given equation is x = 40.

User Toyas
by
7.7k points

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