2(r-4)=r+(-7)18

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Solution for 2(r-4)=r+(-7)18 equation:


Simplifying
2(r + -4) = r + (-7) * 18

Reorder the terms:
2(-4 + r) = r + (-7) * 18
(-4 * 2 + r * 2) = r + (-7) * 18
(-8 + 2r) = r + (-7) * 18

Multiply -7 * 18
-8 + 2r = r + -126

Reorder the terms:
-8 + 2r = -126 + r

Solving
-8 + 2r = -126 + r

Solving for variable 'r'.

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

Add '-1r' to each side of the equation.
-8 + 2r + -1r = -126 + r + -1r

Combine like terms: 2r + -1r = 1r
-8 + 1r = -126 + r + -1r

Combine like terms: r + -1r = 0
-8 + 1r = -126 + 0
-8 + 1r = -126

Add '8' to each side of the equation.
-8 + 8 + 1r = -126 + 8

Combine like terms: -8 + 8 = 0
0 + 1r = -126 + 8
1r = -126 + 8

Combine like terms: -126 + 8 = -118
1r = -118

Divide each side by '1'.
r = -118

Simplifying
r = -118

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