3r-(2r-1)=7

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Solution for 3r-(2r-1)=7 equation:


Simplifying
3r + -1(2r + -1) = 7

Reorder the terms:
3r + -1(-1 + 2r) = 7
3r + (-1 * -1 + 2r * -1) = 7
3r + (1 + -2r) = 7

Reorder the terms:
1 + 3r + -2r = 7

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

Solving
1 + 1r = 7

Solving for variable 'r'.

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

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

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

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

Divide each side by '1'.
r = 6

Simplifying
r = 6

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