-18=2(-8r+3)-7(-6-7r)

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Solution for -18=2(-8r+3)-7(-6-7r) equation:


Simplifying
-18 = 2(-8r + 3) + -7(-6 + -7r)

Reorder the terms:
-18 = 2(3 + -8r) + -7(-6 + -7r)
-18 = (3 * 2 + -8r * 2) + -7(-6 + -7r)
-18 = (6 + -16r) + -7(-6 + -7r)
-18 = 6 + -16r + (-6 * -7 + -7r * -7)
-18 = 6 + -16r + (42 + 49r)

Reorder the terms:
-18 = 6 + 42 + -16r + 49r

Combine like terms: 6 + 42 = 48
-18 = 48 + -16r + 49r

Combine like terms: -16r + 49r = 33r
-18 = 48 + 33r

Solving
-18 = 48 + 33r

Solving for variable 'r'.

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

Add '-33r' to each side of the equation.
-18 + -33r = 48 + 33r + -33r

Combine like terms: 33r + -33r = 0
-18 + -33r = 48 + 0
-18 + -33r = 48

Add '18' to each side of the equation.
-18 + 18 + -33r = 48 + 18

Combine like terms: -18 + 18 = 0
0 + -33r = 48 + 18
-33r = 48 + 18

Combine like terms: 48 + 18 = 66
-33r = 66

Divide each side by '-33'.
r = -2

Simplifying
r = -2

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