19=7r-9

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Solution for 19=7r-9 equation:


Simplifying
19 = 7r + -9

Reorder the terms:
19 = -9 + 7r

Solving
19 = -9 + 7r

Solving for variable 'r'.

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

Add '-7r' to each side of the equation.
19 + -7r = -9 + 7r + -7r

Combine like terms: 7r + -7r = 0
19 + -7r = -9 + 0
19 + -7r = -9

Add '-19' to each side of the equation.
19 + -19 + -7r = -9 + -19

Combine like terms: 19 + -19 = 0
0 + -7r = -9 + -19
-7r = -9 + -19

Combine like terms: -9 + -19 = -28
-7r = -28

Divide each side by '-7'.
r = 4

Simplifying
r = 4

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