7(b-5)+5(b+5)=45

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Solution for 7(b-5)+5(b+5)=45 equation:


Simplifying
7(b + -5) + 5(b + 5) = 45

Reorder the terms:
7(-5 + b) + 5(b + 5) = 45
(-5 * 7 + b * 7) + 5(b + 5) = 45
(-35 + 7b) + 5(b + 5) = 45

Reorder the terms:
-35 + 7b + 5(5 + b) = 45
-35 + 7b + (5 * 5 + b * 5) = 45
-35 + 7b + (25 + 5b) = 45

Reorder the terms:
-35 + 25 + 7b + 5b = 45

Combine like terms: -35 + 25 = -10
-10 + 7b + 5b = 45

Combine like terms: 7b + 5b = 12b
-10 + 12b = 45

Solving
-10 + 12b = 45

Solving for variable 'b'.

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

Add '10' to each side of the equation.
-10 + 10 + 12b = 45 + 10

Combine like terms: -10 + 10 = 0
0 + 12b = 45 + 10
12b = 45 + 10

Combine like terms: 45 + 10 = 55
12b = 55

Divide each side by '12'.
b = 4.583333333

Simplifying
b = 4.583333333

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