3-(4-r)=7

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


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

Combine like terms: 3 + -4 = -1
-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 = 8
1r = 8

Divide each side by '1'.
r = 8

Simplifying
r = 8

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