7(r-1)=r-13+4r

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Solution for 7(r-1)=r-13+4r equation:


Simplifying
7(r + -1) = r + -13 + 4r

Reorder the terms:
7(-1 + r) = r + -13 + 4r
(-1 * 7 + r * 7) = r + -13 + 4r
(-7 + 7r) = r + -13 + 4r

Reorder the terms:
-7 + 7r = -13 + r + 4r

Combine like terms: r + 4r = 5r
-7 + 7r = -13 + 5r

Solving
-7 + 7r = -13 + 5r

Solving for variable 'r'.

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

Add '-5r' to each side of the equation.
-7 + 7r + -5r = -13 + 5r + -5r

Combine like terms: 7r + -5r = 2r
-7 + 2r = -13 + 5r + -5r

Combine like terms: 5r + -5r = 0
-7 + 2r = -13 + 0
-7 + 2r = -13

Add '7' to each side of the equation.
-7 + 7 + 2r = -13 + 7

Combine like terms: -7 + 7 = 0
0 + 2r = -13 + 7
2r = -13 + 7

Combine like terms: -13 + 7 = -6
2r = -6

Divide each side by '2'.
r = -3

Simplifying
r = -3

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