-55=-3(2r+7)+2(r-3)

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Solution for -55=-3(2r+7)+2(r-3) equation:


Simplifying
-55 = -3(2r + 7) + 2(r + -3)

Reorder the terms:
-55 = -3(7 + 2r) + 2(r + -3)
-55 = (7 * -3 + 2r * -3) + 2(r + -3)
-55 = (-21 + -6r) + 2(r + -3)

Reorder the terms:
-55 = -21 + -6r + 2(-3 + r)
-55 = -21 + -6r + (-3 * 2 + r * 2)
-55 = -21 + -6r + (-6 + 2r)

Reorder the terms:
-55 = -21 + -6 + -6r + 2r

Combine like terms: -21 + -6 = -27
-55 = -27 + -6r + 2r

Combine like terms: -6r + 2r = -4r
-55 = -27 + -4r

Solving
-55 = -27 + -4r

Solving for variable 'r'.

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

Add '4r' to each side of the equation.
-55 + 4r = -27 + -4r + 4r

Combine like terms: -4r + 4r = 0
-55 + 4r = -27 + 0
-55 + 4r = -27

Add '55' to each side of the equation.
-55 + 55 + 4r = -27 + 55

Combine like terms: -55 + 55 = 0
0 + 4r = -27 + 55
4r = -27 + 55

Combine like terms: -27 + 55 = 28
4r = 28

Divide each side by '4'.
r = 7

Simplifying
r = 7

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