-(7+r)=10

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Solution for -(7+r)=10 equation: 


Simplifying
-1(7 + r) = 10
(7 * -1 + r * -1) = 10
(-7 + -1r) = 10

Solving
-7 + -1r = 10

Solving for variable 'r'.

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

Add '7' to each side of the equation.
-7 + 7 + -1r = 10 + 7

Combine like terms: -7 + 7 = 0
0 + -1r = 10 + 7
-1r = 10 + 7

Combine like terms: 10 + 7 = 17
-1r = 17

Divide each side by '-1'.
r = -17

Simplifying
r = -17

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