3r+8(5-6r)=142

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Solution for 3r+8(5-6r)=142 equation: 


Simplifying
3r + 8(5 + -6r) = 142
3r + (5 * 8 + -6r * 8) = 142
3r + (40 + -48r) = 142

Reorder the terms:
40 + 3r + -48r = 142

Combine like terms: 3r + -48r = -45r
40 + -45r = 142

Solving
40 + -45r = 142

Solving for variable 'r'.

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

Add '-40' to each side of the equation.
40 + -40 + -45r = 142 + -40

Combine like terms: 40 + -40 = 0
0 + -45r = 142 + -40
-45r = 142 + -40

Combine like terms: 142 + -40 = 102
-45r = 102

Divide each side by '-45'.
r = -2.266666667

Simplifying
r = -2.266666667

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