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

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


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

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

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

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

Solving
7 + 1r = 1 + 3r

Solving for variable 'r'.

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

Add '-3r' to each side of the equation.
7 + 1r + -3r = 1 + 3r + -3r

Combine like terms: 1r + -3r = -2r
7 + -2r = 1 + 3r + -3r

Combine like terms: 3r + -3r = 0
7 + -2r = 1 + 0
7 + -2r = 1

Add '-7' to each side of the equation.
7 + -7 + -2r = 1 + -7

Combine like terms: 7 + -7 = 0
0 + -2r = 1 + -7
-2r = 1 + -7

Combine like terms: 1 + -7 = -6
-2r = -6

Divide each side by '-2'.
r = 3

Simplifying
r = 3

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