10(r+4)=2(r+10)

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Solution for 10(r+4)=2(r+10) equation:


Simplifying
10(r + 4) = 2(r + 10)

Reorder the terms:
10(4 + r) = 2(r + 10)
(4 * 10 + r * 10) = 2(r + 10)
(40 + 10r) = 2(r + 10)

Reorder the terms:
40 + 10r = 2(10 + r)
40 + 10r = (10 * 2 + r * 2)
40 + 10r = (20 + 2r)

Solving
40 + 10r = 20 + 2r

Solving for variable 'r'.

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

Add '-2r' to each side of the equation.
40 + 10r + -2r = 20 + 2r + -2r

Combine like terms: 10r + -2r = 8r
40 + 8r = 20 + 2r + -2r

Combine like terms: 2r + -2r = 0
40 + 8r = 20 + 0
40 + 8r = 20

Add '-40' to each side of the equation.
40 + -40 + 8r = 20 + -40

Combine like terms: 40 + -40 = 0
0 + 8r = 20 + -40
8r = 20 + -40

Combine like terms: 20 + -40 = -20
8r = -20

Divide each side by '8'.
r = -2.5

Simplifying
r = -2.5

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