How do you solve 4( b + 6) = 2( b + 5) + 2?

1 Answer
Jun 5, 2018

b = -6

Explanation:

4(b+6) = 2(b+5) + 2

To solve for the variable b, we need to make it by itself. First, use the distributive property (shown below) to simplify 4(b+6) and 2(b+5):
cdn.virtualnerd.comcdn.virtualnerd.com

Following this image, we know that:
color(blue)(4(b+6) = (4 * b) + (4 * 6) = 4b + 24)
and
color(blue)(2(b+5) = (2 * b) + (2 * 5) = 2b + 10)

Put them back into the equation:
4b + 24 = 2b + 10 + 2

Combine 10 + 2:
4b + 24 = 2b + 12

Subtract color(blue)(2b) from both sides:
4b + 24 quadcolor(blue)(-quad2b) = 2b + 12 quadcolor(blue)(-quad2b)

2b + 24 = 12

Now subtract color(blue)24 from both sides:
2b + 24 quadcolor(blue)(-quad24) = 12 quadcolor(blue)(-quad24)

2b = -12

Divide both sides by color(blue)2:
(2b)/color(blue)2 = -12/color(blue)2

Therefore,
b = -6

Hope this helps!