Question

What is the solution to 4(2x - 1) = 20?
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X=

Answer 1

`x=3`

Explanation:

Use the distributive property to expand the left side:

`a(b-c)\\\\ab-ac`

Simplify:

`4(2x-1)=20\\\\4(2x)-4(1)=20\\\\8x-4=20`

Isolate the variable, x. Add 4 to both sides of the equation:

`8x-4+4=20+4\\\\8x=24`

Now divide both sides by 8:

`(8x)/(8) =(24)/(8)\\\\ x=3`

The value of x is 3.

:Done

Answer 2

x=3

Explanation:

4(2x - 1) = 20

Divide each side by 4

4/4(2x - 1) = 20/4

2x-1 = 5

Add 1 to each side

2x-1 +1 = 5+1

2x= 6

Divide by 2

2x/2 = 6/2

x = 3