-70=2(9-2b)

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Solution for -70=2(9-2b) equation:


Simplifying
-70 = 2(9 + -2b)
-70 = (9 * 2 + -2b * 2)
-70 = (18 + -4b)

Solving
-70 = 18 + -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.
-70 + 4b = 18 + -4b + 4b

Combine like terms: -4b + 4b = 0
-70 + 4b = 18 + 0
-70 + 4b = 18

Add '70' to each side of the equation.
-70 + 70 + 4b = 18 + 70

Combine like terms: -70 + 70 = 0
0 + 4b = 18 + 70
4b = 18 + 70

Combine like terms: 18 + 70 = 88
4b = 88

Divide each side by '4'.
b = 22

Simplifying
b = 22

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