B=13-(12-4*(-1)-7)*(5-7.5)

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Solution for B=13-(12-4*(-1)-7)*(5-7.5) equation: 


Simplifying
B = 13 + -1(12 + -4(-1) + -7)(5 + -7.5)

Multiply -4 * -1
B = 13 + -1(12 + 4 + -7)(5 + -7.5)

Combine like terms: 12 + 4 = 16
B = 13 + -1(16 + -7)(5 + -7.5)

Combine like terms: 16 + -7 = 9
B = 13 + -1(9)(5 + -7.5)

Combine like terms: 5 + -7.5 = -2.5
B = 13 + -1 * 9(-2.5)

Multiply -1 * 9
B = 13 + -9 * -2.5

Multiply -9 * -2.5
B = 13 + 22.5

Combine like terms: 13 + 22.5 = 35.5
B = 35.5

Solving
B = 35.5

Solving for variable 'B'.

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

Simplifying
B = 35.5

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