e-r=m

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Solution for e-r=m equation: 


Simplifying
e + -1r = m

Solving
e + -1r = m

Solving for variable 'e'.

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

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

Combine like terms: -1r + r = 0
e + 0 = m + r
e = m + r

Simplifying
e = m + r

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