3(b-7)=4(b+5)

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Solution for 3(b-7)=4(b+5) equation:


Simplifying
3(b + -7) = 4(b + 5)

Reorder the terms:
3(-7 + b) = 4(b + 5)
(-7 * 3 + b * 3) = 4(b + 5)
(-21 + 3b) = 4(b + 5)

Reorder the terms:
-21 + 3b = 4(5 + b)
-21 + 3b = (5 * 4 + b * 4)
-21 + 3b = (20 + 4b)

Solving
-21 + 3b = 20 + 4b

Solving for variable 'b'.

Move all terms containing b to the left, all other terms to the right.

Add '-4b' to each side of the equation.
-21 + 3b + -4b = 20 + 4b + -4b

Combine like terms: 3b + -4b = -1b
-21 + -1b = 20 + 4b + -4b

Combine like terms: 4b + -4b = 0
-21 + -1b = 20 + 0
-21 + -1b = 20

Add '21' to each side of the equation.
-21 + 21 + -1b = 20 + 21

Combine like terms: -21 + 21 = 0
0 + -1b = 20 + 21
-1b = 20 + 21

Combine like terms: 20 + 21 = 41
-1b = 41

Divide each side by '-1'.
b = -41

Simplifying
b = -41

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