Question

3x + 5 = 2x + 7 What should you do first to isolate the variable?

Answer 1

subtract the lowest variable from the highest variable.

Explanation:

3x+5=2x+7

1x+5=7

add the 5 to the 7

12

divide 12 and the 3x

Answer: 4.

x=4

Answer 2

you can subtract 2x from both sides

Then subtract 5 from both sides.

x = 2 is what the equation gives you

Explanation:

You can do one of two things.

1. You can subtract 2x from both sides of the equation

or

2. You can subtract 5 from both sides of the equation.

Either one will give you the correct answer.

3x - 2x + 5 = 2x - 2x + 7 Combine the xs

1x + 5 = 7 Subtract 5 from both sides.

x + 5-5 = 7-5

x = 2