8r+4(r-7)=-2(3r+10)

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Solution for 8r+4(r-7)=-2(3r+10) equation:


Simplifying
8r + 4(r + -7) = -2(3r + 10)

Reorder the terms:
8r + 4(-7 + r) = -2(3r + 10)
8r + (-7 * 4 + r * 4) = -2(3r + 10)
8r + (-28 + 4r) = -2(3r + 10)

Reorder the terms:
-28 + 8r + 4r = -2(3r + 10)

Combine like terms: 8r + 4r = 12r
-28 + 12r = -2(3r + 10)

Reorder the terms:
-28 + 12r = -2(10 + 3r)
-28 + 12r = (10 * -2 + 3r * -2)
-28 + 12r = (-20 + -6r)

Solving
-28 + 12r = -20 + -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.
-28 + 12r + 6r = -20 + -6r + 6r

Combine like terms: 12r + 6r = 18r
-28 + 18r = -20 + -6r + 6r

Combine like terms: -6r + 6r = 0
-28 + 18r = -20 + 0
-28 + 18r = -20

Add '28' to each side of the equation.
-28 + 28 + 18r = -20 + 28

Combine like terms: -28 + 28 = 0
0 + 18r = -20 + 28
18r = -20 + 28

Combine like terms: -20 + 28 = 8
18r = 8

Divide each side by '18'.
r = 0.4444444444

Simplifying
r = 0.4444444444

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