3[2-(5-2r)]=5r-30

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Solution for 3[2-(5-2r)]=5r-30 equation:


Simplifying
3[2 + -1(5 + -2r)] = 5r + -30
3[2 + (5 * -1 + -2r * -1)] = 5r + -30
3[2 + (-5 + 2r)] = 5r + -30

Combine like terms: 2 + -5 = -3
3[-3 + 2r] = 5r + -30
[-3 * 3 + 2r * 3] = 5r + -30
[-9 + 6r] = 5r + -30

Reorder the terms:
-9 + 6r = -30 + 5r

Solving
-9 + 6r = -30 + 5r

Solving for variable 'r'.

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

Add '-5r' to each side of the equation.
-9 + 6r + -5r = -30 + 5r + -5r

Combine like terms: 6r + -5r = 1r
-9 + 1r = -30 + 5r + -5r

Combine like terms: 5r + -5r = 0
-9 + 1r = -30 + 0
-9 + 1r = -30

Add '9' to each side of the equation.
-9 + 9 + 1r = -30 + 9

Combine like terms: -9 + 9 = 0
0 + 1r = -30 + 9
1r = -30 + 9

Combine like terms: -30 + 9 = -21
1r = -21

Divide each side by '1'.
r = -21

Simplifying
r = -21

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