247=-7(-1+8b)-4b

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Solution for 247=-7(-1+8b)-4b equation:


Simplifying
247 = -7(-1 + 8b) + -4b
247 = (-1 * -7 + 8b * -7) + -4b
247 = (7 + -56b) + -4b

Combine like terms: -56b + -4b = -60b
247 = 7 + -60b

Solving
247 = 7 + -60b

Solving for variable 'b'.

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

Add '60b' to each side of the equation.
247 + 60b = 7 + -60b + 60b

Combine like terms: -60b + 60b = 0
247 + 60b = 7 + 0
247 + 60b = 7

Add '-247' to each side of the equation.
247 + -247 + 60b = 7 + -247

Combine like terms: 247 + -247 = 0
0 + 60b = 7 + -247
60b = 7 + -247

Combine like terms: 7 + -247 = -240
60b = -240

Divide each side by '60'.
b = -4

Simplifying
b = -4

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