2r=7(r-15)

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Solution for 2r=7(r-15) equation:


Simplifying
2r = 7(r + -15)

Reorder the terms:
2r = 7(-15 + r)
2r = (-15 * 7 + r * 7)
2r = (-105 + 7r)

Solving
2r = -105 + 7r

Solving for variable 'r'.

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

Add '-7r' to each side of the equation.
2r + -7r = -105 + 7r + -7r

Combine like terms: 2r + -7r = -5r
-5r = -105 + 7r + -7r

Combine like terms: 7r + -7r = 0
-5r = -105 + 0
-5r = -105

Divide each side by '-5'.
r = 21

Simplifying
r = 21

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