9(7+r)=-3(1-2r)

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Solution for 9(7+r)=-3(1-2r) equation:


Simplifying
9(7 + r) = -3(1 + -2r)
(7 * 9 + r * 9) = -3(1 + -2r)
(63 + 9r) = -3(1 + -2r)
63 + 9r = (1 * -3 + -2r * -3)
63 + 9r = (-3 + 6r)

Solving
63 + 9r = -3 + 6r

Solving for variable 'r'.

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

Add '-6r' to each side of the equation.
63 + 9r + -6r = -3 + 6r + -6r

Combine like terms: 9r + -6r = 3r
63 + 3r = -3 + 6r + -6r

Combine like terms: 6r + -6r = 0
63 + 3r = -3 + 0
63 + 3r = -3

Add '-63' to each side of the equation.
63 + -63 + 3r = -3 + -63

Combine like terms: 63 + -63 = 0
0 + 3r = -3 + -63
3r = -3 + -63

Combine like terms: -3 + -63 = -66
3r = -66

Divide each side by '3'.
r = -22

Simplifying
r = -22

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