12=-(8r-5)+7(1-5r)

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Solution for 12=-(8r-5)+7(1-5r) equation:


Simplifying
12 = -1(8r + -5) + 7(1 + -5r)

Reorder the terms:
12 = -1(-5 + 8r) + 7(1 + -5r)
12 = (-5 * -1 + 8r * -1) + 7(1 + -5r)
12 = (5 + -8r) + 7(1 + -5r)
12 = 5 + -8r + (1 * 7 + -5r * 7)
12 = 5 + -8r + (7 + -35r)

Reorder the terms:
12 = 5 + 7 + -8r + -35r

Combine like terms: 5 + 7 = 12
12 = 12 + -8r + -35r

Combine like terms: -8r + -35r = -43r
12 = 12 + -43r

Add '-12' to each side of the equation.
12 + -12 = 12 + -12 + -43r

Combine like terms: 12 + -12 = 0
0 = 12 + -12 + -43r

Combine like terms: 12 + -12 = 0
0 = 0 + -43r
0 = -43r

Solving
0 = -43r

Solving for variable 'r'.

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

Add '43r' to each side of the equation.
0 + 43r = -43r + 43r
Remove the zero:
43r = -43r + 43r

Combine like terms: -43r + 43r = 0
43r = 0

Divide each side by '43'.
r = 0

Simplifying
r = 0

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