5-2(10r+4)=-9(r-7)

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Solution for 5-2(10r+4)=-9(r-7) equation:


Simplifying
5 + -2(10r + 4) = -9(r + -7)

Reorder the terms:
5 + -2(4 + 10r) = -9(r + -7)
5 + (4 * -2 + 10r * -2) = -9(r + -7)
5 + (-8 + -20r) = -9(r + -7)

Combine like terms: 5 + -8 = -3
-3 + -20r = -9(r + -7)

Reorder the terms:
-3 + -20r = -9(-7 + r)
-3 + -20r = (-7 * -9 + r * -9)
-3 + -20r = (63 + -9r)

Solving
-3 + -20r = 63 + -9r

Solving for variable 'r'.

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

Add '9r' to each side of the equation.
-3 + -20r + 9r = 63 + -9r + 9r

Combine like terms: -20r + 9r = -11r
-3 + -11r = 63 + -9r + 9r

Combine like terms: -9r + 9r = 0
-3 + -11r = 63 + 0
-3 + -11r = 63

Add '3' to each side of the equation.
-3 + 3 + -11r = 63 + 3

Combine like terms: -3 + 3 = 0
0 + -11r = 63 + 3
-11r = 63 + 3

Combine like terms: 63 + 3 = 66
-11r = 66

Divide each side by '-11'.
r = -6

Simplifying
r = -6

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