-7(10r-12)-2(-3-3r)=

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Solution for -7(10r-12)-2(-3-3r)= equation:


Simplifying
-7(10r + -12) + -2(-3 + -3r) = 0

Reorder the terms:
-7(-12 + 10r) + -2(-3 + -3r) = 0
(-12 * -7 + 10r * -7) + -2(-3 + -3r) = 0
(84 + -70r) + -2(-3 + -3r) = 0
84 + -70r + (-3 * -2 + -3r * -2) = 0
84 + -70r + (6 + 6r) = 0

Reorder the terms:
84 + 6 + -70r + 6r = 0

Combine like terms: 84 + 6 = 90
90 + -70r + 6r = 0

Combine like terms: -70r + 6r = -64r
90 + -64r = 0

Solving
90 + -64r = 0

Solving for variable 'r'.

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

Add '-90' to each side of the equation.
90 + -90 + -64r = 0 + -90

Combine like terms: 90 + -90 = 0
0 + -64r = 0 + -90
-64r = 0 + -90

Combine like terms: 0 + -90 = -90
-64r = -90

Divide each side by '-64'.
r = 1.40625

Simplifying
r = 1.40625

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