-3(7r+10)+6(10r+2)=

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Solution for -3(7r+10)+6(10r+2)= equation:


Simplifying
-3(7r + 10) + 6(10r + 2) = 0

Reorder the terms:
-3(10 + 7r) + 6(10r + 2) = 0
(10 * -3 + 7r * -3) + 6(10r + 2) = 0
(-30 + -21r) + 6(10r + 2) = 0

Reorder the terms:
-30 + -21r + 6(2 + 10r) = 0
-30 + -21r + (2 * 6 + 10r * 6) = 0
-30 + -21r + (12 + 60r) = 0

Reorder the terms:
-30 + 12 + -21r + 60r = 0

Combine like terms: -30 + 12 = -18
-18 + -21r + 60r = 0

Combine like terms: -21r + 60r = 39r
-18 + 39r = 0

Solving
-18 + 39r = 0

Solving for variable 'r'.

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

Add '18' to each side of the equation.
-18 + 18 + 39r = 0 + 18

Combine like terms: -18 + 18 = 0
0 + 39r = 0 + 18
39r = 0 + 18

Combine like terms: 0 + 18 = 18
39r = 18

Divide each side by '39'.
r = 0.4615384615

Simplifying
r = 0.4615384615

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