4-8(9r+2)=-10(9r-6)

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Solution for 4-8(9r+2)=-10(9r-6) equation:


Simplifying
4 + -8(9r + 2) = -10(9r + -6)

Reorder the terms:
4 + -8(2 + 9r) = -10(9r + -6)
4 + (2 * -8 + 9r * -8) = -10(9r + -6)
4 + (-16 + -72r) = -10(9r + -6)

Combine like terms: 4 + -16 = -12
-12 + -72r = -10(9r + -6)

Reorder the terms:
-12 + -72r = -10(-6 + 9r)
-12 + -72r = (-6 * -10 + 9r * -10)
-12 + -72r = (60 + -90r)

Solving
-12 + -72r = 60 + -90r

Solving for variable 'r'.

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

Add '90r' to each side of the equation.
-12 + -72r + 90r = 60 + -90r + 90r

Combine like terms: -72r + 90r = 18r
-12 + 18r = 60 + -90r + 90r

Combine like terms: -90r + 90r = 0
-12 + 18r = 60 + 0
-12 + 18r = 60

Add '12' to each side of the equation.
-12 + 12 + 18r = 60 + 12

Combine like terms: -12 + 12 = 0
0 + 18r = 60 + 12
18r = 60 + 12

Combine like terms: 60 + 12 = 72
18r = 72

Divide each side by '18'.
r = 4

Simplifying
r = 4

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