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

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


Simplifying
-5(2r + 4) + 4(r + -7) = 0

Reorder the terms:
-5(4 + 2r) + 4(r + -7) = 0
(4 * -5 + 2r * -5) + 4(r + -7) = 0
(-20 + -10r) + 4(r + -7) = 0

Reorder the terms:
-20 + -10r + 4(-7 + r) = 0
-20 + -10r + (-7 * 4 + r * 4) = 0
-20 + -10r + (-28 + 4r) = 0

Reorder the terms:
-20 + -28 + -10r + 4r = 0

Combine like terms: -20 + -28 = -48
-48 + -10r + 4r = 0

Combine like terms: -10r + 4r = -6r
-48 + -6r = 0

Solving
-48 + -6r = 0

Solving for variable 'r'.

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

Add '48' to each side of the equation.
-48 + 48 + -6r = 0 + 48

Combine like terms: -48 + 48 = 0
0 + -6r = 0 + 48
-6r = 0 + 48

Combine like terms: 0 + 48 = 48
-6r = 48

Divide each side by '-6'.
r = -8

Simplifying
r = -8

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