1. 5x + 3 = 7x – 1. Find x

a. 1/3
b. ½
c. 1
d. 2

2 answers

3 + 1 = 7x – 5x
every time you move something it changes signs
4 = 2x anything multiplied is divided on the other side and vice versa
4/2 = x
2 = x
5 x + 3 = 7 x – 1

Subtract 7 x to both sides

- 2 x + 3 = - 1

Subtract 3 to both sides

- 2 x = - 4

Divide both sides by - 2

x = - 4 / - 2 = 2