7=2r-1

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Solution for 7=2r-1 equation:


Simplifying
7 = 2r + -1

Reorder the terms:
7 = -1 + 2r

Solving
7 = -1 + 2r

Solving for variable 'r'.

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

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

Combine like terms: 2r + -2r = 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 = -8
-2r = -8

Divide each side by '-2'.
r = 4

Simplifying
r = 4

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