-10r-3(9-r)=4(-2r+5)-12

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Solution for -10r-3(9-r)=4(-2r+5)-12 equation:


Simplifying
-10r + -3(9 + -1r) = 4(-2r + 5) + -12
-10r + (9 * -3 + -1r * -3) = 4(-2r + 5) + -12
-10r + (-27 + 3r) = 4(-2r + 5) + -12

Reorder the terms:
-27 + -10r + 3r = 4(-2r + 5) + -12

Combine like terms: -10r + 3r = -7r
-27 + -7r = 4(-2r + 5) + -12

Reorder the terms:
-27 + -7r = 4(5 + -2r) + -12
-27 + -7r = (5 * 4 + -2r * 4) + -12
-27 + -7r = (20 + -8r) + -12

Reorder the terms:
-27 + -7r = 20 + -12 + -8r

Combine like terms: 20 + -12 = 8
-27 + -7r = 8 + -8r

Solving
-27 + -7r = 8 + -8r

Solving for variable 'r'.

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

Add '8r' to each side of the equation.
-27 + -7r + 8r = 8 + -8r + 8r

Combine like terms: -7r + 8r = 1r
-27 + 1r = 8 + -8r + 8r

Combine like terms: -8r + 8r = 0
-27 + 1r = 8 + 0
-27 + 1r = 8

Add '27' to each side of the equation.
-27 + 27 + 1r = 8 + 27

Combine like terms: -27 + 27 = 0
0 + 1r = 8 + 27
1r = 8 + 27

Combine like terms: 8 + 27 = 35
1r = 35

Divide each side by '1'.
r = 35

Simplifying
r = 35

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