-4=-9+r

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Solution for -4=-9+r equation: 


Simplifying
-4 = -9 + r

Solving
-4 = -9 + 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.
-4 + -1r = -9 + r + -1r

Combine like terms: r + -1r = 0
-4 + -1r = -9 + 0
-4 + -1r = -9

Add '4' to each side of the equation.
-4 + 4 + -1r = -9 + 4

Combine like terms: -4 + 4 = 0
0 + -1r = -9 + 4
-1r = -9 + 4

Combine like terms: -9 + 4 = -5
-1r = -5

Divide each side by '-1'.
r = 5

Simplifying
r = 5

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