4(r+7)=7+r

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Solution for 4(r+7)=7+r equation:


Simplifying
4(r + 7) = 7 + r

Reorder the terms:
4(7 + r) = 7 + r
(7 * 4 + r * 4) = 7 + r
(28 + 4r) = 7 + r

Solving
28 + 4r = 7 + 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.
28 + 4r + -1r = 7 + r + -1r

Combine like terms: 4r + -1r = 3r
28 + 3r = 7 + r + -1r

Combine like terms: r + -1r = 0
28 + 3r = 7 + 0
28 + 3r = 7

Add '-28' to each side of the equation.
28 + -28 + 3r = 7 + -28

Combine like terms: 28 + -28 = 0
0 + 3r = 7 + -28
3r = 7 + -28

Combine like terms: 7 + -28 = -21
3r = -21

Divide each side by '3'.
r = -7

Simplifying
r = -7

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