-7r=7(8+3r)

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


Simplifying
-7r = 7(8 + 3r)
-7r = (8 * 7 + 3r * 7)
-7r = (56 + 21r)

Solving
-7r = 56 + 21r

Solving for variable 'r'.

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

Add '-21r' to each side of the equation.
-7r + -21r = 56 + 21r + -21r

Combine like terms: -7r + -21r = -28r
-28r = 56 + 21r + -21r

Combine like terms: 21r + -21r = 0
-28r = 56 + 0
-28r = 56

Divide each side by '-28'.
r = -2

Simplifying
r = -2

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