45=3(7r-6)

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Solution for 45=3(7r-6) equation:


Simplifying
45 = 3(7r + -6)

Reorder the terms:
45 = 3(-6 + 7r)
45 = (-6 * 3 + 7r * 3)
45 = (-18 + 21r)

Solving
45 = -18 + 21r

Solving for variable 'r'.

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

Add '-21r' to each side of the equation.
45 + -21r = -18 + 21r + -21r

Combine like terms: 21r + -21r = 0
45 + -21r = -18 + 0
45 + -21r = -18

Add '-45' to each side of the equation.
45 + -45 + -21r = -18 + -45

Combine like terms: 45 + -45 = 0
0 + -21r = -18 + -45
-21r = -18 + -45

Combine like terms: -18 + -45 = -63
-21r = -63

Divide each side by '-21'.
r = 3

Simplifying
r = 3

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