4(r-1)+5r+3=1r-7

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Solution for 4(r-1)+5r+3=1r-7 equation:


Simplifying
4(r + -1) + 5r + 3 = 1r + -7

Reorder the terms:
4(-1 + r) + 5r + 3 = 1r + -7
(-1 * 4 + r * 4) + 5r + 3 = 1r + -7
(-4 + 4r) + 5r + 3 = 1r + -7

Reorder the terms:
-4 + 3 + 4r + 5r = 1r + -7

Combine like terms: -4 + 3 = -1
-1 + 4r + 5r = 1r + -7

Combine like terms: 4r + 5r = 9r
-1 + 9r = 1r + -7

Reorder the terms:
-1 + 9r = -7 + 1r

Solving
-1 + 9r = -7 + 1r

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.
-1 + 9r + -1r = -7 + 1r + -1r

Combine like terms: 9r + -1r = 8r
-1 + 8r = -7 + 1r + -1r

Combine like terms: 1r + -1r = 0
-1 + 8r = -7 + 0
-1 + 8r = -7

Add '1' to each side of the equation.
-1 + 1 + 8r = -7 + 1

Combine like terms: -1 + 1 = 0
0 + 8r = -7 + 1
8r = -7 + 1

Combine like terms: -7 + 1 = -6
8r = -6

Divide each side by '8'.
r = -0.75

Simplifying
r = -0.75

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