7(3r+9+3s)=

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Solution for 7(3r+9+3s)= equation:


Simplifying
7(3r + 9 + 3s) = 0

Reorder the terms:
7(9 + 3r + 3s) = 0
(9 * 7 + 3r * 7 + 3s * 7) = 0
(63 + 21r + 21s) = 0

Solving
63 + 21r + 21s = 0

Solving for variable 'r'.

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

Add '-63' to each side of the equation.
63 + 21r + -63 + 21s = 0 + -63

Reorder the terms:
63 + -63 + 21r + 21s = 0 + -63

Combine like terms: 63 + -63 = 0
0 + 21r + 21s = 0 + -63
21r + 21s = 0 + -63

Combine like terms: 0 + -63 = -63
21r + 21s = -63

Add '-21s' to each side of the equation.
21r + 21s + -21s = -63 + -21s

Combine like terms: 21s + -21s = 0
21r + 0 = -63 + -21s
21r = -63 + -21s

Divide each side by '21'.
r = -3 + -1s

Simplifying
r = -3 + -1s

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