8-2(7-r)=-(1+3r)+10r

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Solution for 8-2(7-r)=-(1+3r)+10r equation:


Simplifying
8 + -2(7 + -1r) = -1(1 + 3r) + 10r
8 + (7 * -2 + -1r * -2) = -1(1 + 3r) + 10r
8 + (-14 + 2r) = -1(1 + 3r) + 10r

Combine like terms: 8 + -14 = -6
-6 + 2r = -1(1 + 3r) + 10r
-6 + 2r = (1 * -1 + 3r * -1) + 10r
-6 + 2r = (-1 + -3r) + 10r

Combine like terms: -3r + 10r = 7r
-6 + 2r = -1 + 7r

Solving
-6 + 2r = -1 + 7r

Solving for variable 'r'.

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

Add '-7r' to each side of the equation.
-6 + 2r + -7r = -1 + 7r + -7r

Combine like terms: 2r + -7r = -5r
-6 + -5r = -1 + 7r + -7r

Combine like terms: 7r + -7r = 0
-6 + -5r = -1 + 0
-6 + -5r = -1

Add '6' to each side of the equation.
-6 + 6 + -5r = -1 + 6

Combine like terms: -6 + 6 = 0
0 + -5r = -1 + 6
-5r = -1 + 6

Combine like terms: -1 + 6 = 5
-5r = 5

Divide each side by '-5'.
r = -1

Simplifying
r = -1

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