How do you solve 4( 3+ 5x ) - 1= 31?

2 Answers
May 30, 2018

x=1

Explanation:

4(3+5x)−1=31

Add 1 to both sides

4(3+5x)=31+1

Open bracket

12+20x=32

Subtract 12 from both sides.

20x= 32-12

20x=20

Divide both sides by 1

(20x)/20 = 20/20

x =1

May 30, 2018

x=1

Explanation:

Firstly shift -1 to the right
4(3+5x)=31+1
4(3+5x)=32

Then divide both sides by 4
[4(3+5x)]/4=32/4
5x+3=8

Shift 3 to the right
5x=8-3
5x=5

Then divide both sides by 5
(5x)/5=5/5
x=1