Question

1. 5x + 3 = 7x – 1. Find x

a. 1/3
b. ½
c. 1
d. 2

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Answer 1

D

5x + 3 = 7x - 1

now collect like terms

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

$= > d \: is \: the \: answer < =$

Answer 2

= 5x + 3 =7x - 1

= 5x - 7x = -1 -3

= -2x = -4

= x = -4 /-2

= x = 2