What is the answer to 5(2x+1)=2x+21

Question

asked Mar 15, 2019 212k views

2 Answers

Cool Eagle · Answer 1 · 2019-03-16T18:36:51+0000

5(2x + 1) = 2x + 21

Multiply the 5 into (2x + 1)

10x + 5 = 2x + 21

Subtract 2x on both sides to get the "x" on one side of the equation

8x + 5 = 21

Subtract 5 on both sides

8x = 16

Divide 8 on both sides to get "x" by itself

x = 2

Adrien Brunelat · Answer 2 · 2019-03-18T16:49:33+0000

5(2x+1)=2x+21

Multiply 5 times (2+1)

10x+5=2x+21

Subtract -2x from 10x

10x - 2x = 8x

8x+5=21

Subtract 5 from 21

21 - 5 = 16

8x=16

Divide 16 by 8

16 / 8 = 2

x = 2

Answer: x=2

kaleidoscope; live