40=r-10

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Solution for 40=r-10 equation:


Simplifying
40 = r + -10

Reorder the terms:
40 = -10 + r

Solving
40 = -10 + 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.
40 + -1r = -10 + r + -1r

Combine like terms: r + -1r = 0
40 + -1r = -10 + 0
40 + -1r = -10

Add '-40' to each side of the equation.
40 + -40 + -1r = -10 + -40

Combine like terms: 40 + -40 = 0
0 + -1r = -10 + -40
-1r = -10 + -40

Combine like terms: -10 + -40 = -50
-1r = -50

Divide each side by '-1'.
r = 50

Simplifying
r = 50

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