-5(7+2r)=20+r

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Solution for -5(7+2r)=20+r equation:


Simplifying
-5(7 + 2r) = 20 + r
(7 * -5 + 2r * -5) = 20 + r
(-35 + -10r) = 20 + r

Solving
-35 + -10r = 20 + 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.
-35 + -10r + -1r = 20 + r + -1r

Combine like terms: -10r + -1r = -11r
-35 + -11r = 20 + r + -1r

Combine like terms: r + -1r = 0
-35 + -11r = 20 + 0
-35 + -11r = 20

Add '35' to each side of the equation.
-35 + 35 + -11r = 20 + 35

Combine like terms: -35 + 35 = 0
0 + -11r = 20 + 35
-11r = 20 + 35

Combine like terms: 20 + 35 = 55
-11r = 55

Divide each side by '-11'.
r = -5

Simplifying
r = -5

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