r-77=-r-7

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Solution for r-77=-r-7 equation:


Simplifying
r + -77 = -1r + -7

Reorder the terms:
-77 + r = -1r + -7

Reorder the terms:
-77 + r = -7 + -1r

Solving
-77 + r = -7 + -1r

Solving for variable 'r'.

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

Add 'r' to each side of the equation.
-77 + r + r = -7 + -1r + r

Combine like terms: r + r = 2r
-77 + 2r = -7 + -1r + r

Combine like terms: -1r + r = 0
-77 + 2r = -7 + 0
-77 + 2r = -7

Add '77' to each side of the equation.
-77 + 77 + 2r = -7 + 77

Combine like terms: -77 + 77 = 0
0 + 2r = -7 + 77
2r = -7 + 77

Combine like terms: -7 + 77 = 70
2r = 70

Divide each side by '2'.
r = 35

Simplifying
r = 35

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