126=3(2+5r)

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Solution for 126=3(2+5r) equation:


Simplifying
126 = 3(2 + 5r)
126 = (2 * 3 + 5r * 3)
126 = (6 + 15r)

Solving
126 = 6 + 15r

Solving for variable 'r'.

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

Add '-15r' to each side of the equation.
126 + -15r = 6 + 15r + -15r

Combine like terms: 15r + -15r = 0
126 + -15r = 6 + 0
126 + -15r = 6

Add '-126' to each side of the equation.
126 + -126 + -15r = 6 + -126

Combine like terms: 126 + -126 = 0
0 + -15r = 6 + -126
-15r = 6 + -126

Combine like terms: 6 + -126 = -120
-15r = -120

Divide each side by '-15'.
r = 8

Simplifying
r = 8

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