5(4+r)=2(40+10r)

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Solution for 5(4+r)=2(40+10r) equation:


Simplifying
5(4 + r) = 2(40 + 10r)
(4 * 5 + r * 5) = 2(40 + 10r)
(20 + 5r) = 2(40 + 10r)
20 + 5r = (40 * 2 + 10r * 2)
20 + 5r = (80 + 20r)

Solving
20 + 5r = 80 + 20r

Solving for variable 'r'.

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

Add '-20r' to each side of the equation.
20 + 5r + -20r = 80 + 20r + -20r

Combine like terms: 5r + -20r = -15r
20 + -15r = 80 + 20r + -20r

Combine like terms: 20r + -20r = 0
20 + -15r = 80 + 0
20 + -15r = 80

Add '-20' to each side of the equation.
20 + -20 + -15r = 80 + -20

Combine like terms: 20 + -20 = 0
0 + -15r = 80 + -20
-15r = 80 + -20

Combine like terms: 80 + -20 = 60
-15r = 60

Divide each side by '-15'.
r = -4

Simplifying
r = -4

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