r-3=(-7)

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Solution for r-3=(-7) equation: 


Simplifying
r + -3 = (-7)

Reorder the terms:
-3 + r = (-7)
-3 + r = -7

Solving
-3 + r = -7

Solving for variable 'r'.

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

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

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

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

Simplifying
r = -4

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