7(4+7b)=-70

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Solution for 7(4+7b)=-70 equation: 


Simplifying
7(4 + 7b) = -70
(4 * 7 + 7b * 7) = -70
(28 + 49b) = -70

Solving
28 + 49b = -70

Solving for variable 'b'.

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

Add '-28' to each side of the equation.
28 + -28 + 49b = -70 + -28

Combine like terms: 28 + -28 = 0
0 + 49b = -70 + -28
49b = -70 + -28

Combine like terms: -70 + -28 = -98
49b = -98

Divide each side by '49'.
b = -2

Simplifying
b = -2

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