3+6(7-7r)=(r-4)

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Solution for 3+6(7-7r)=(r-4) equation:


Simplifying
3 + 6(7 + -7r) = (r + -4)
3 + (7 * 6 + -7r * 6) = (r + -4)
3 + (42 + -42r) = (r + -4)

Combine like terms: 3 + 42 = 45
45 + -42r = (r + -4)

Reorder the terms:
45 + -42r = (-4 + r)

Remove parenthesis around (-4 + r)
45 + -42r = -4 + r

Solving
45 + -42r = -4 + r

Solving for variable 'r'.

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

Add '-1r' to each side of the equation.
45 + -42r + -1r = -4 + r + -1r

Combine like terms: -42r + -1r = -43r
45 + -43r = -4 + r + -1r

Combine like terms: r + -1r = 0
45 + -43r = -4 + 0
45 + -43r = -4

Add '-45' to each side of the equation.
45 + -45 + -43r = -4 + -45

Combine like terms: 45 + -45 = 0
0 + -43r = -4 + -45
-43r = -4 + -45

Combine like terms: -4 + -45 = -49
-43r = -49

Divide each side by '-43'.
r = 1.139534884

Simplifying
r = 1.139534884

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