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

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


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

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

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

Solving for variable 'r'.

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

Add '4r' to each side of the equation.
-7 + -7r + 4r = -28 + -4r + 4r

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

Combine like terms: -4r + 4r = 0
-7 + -3r = -28 + 0
-7 + -3r = -28

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

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

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

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

Simplifying
r = 7

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