How do you solve -52+m=84?

1 Answer
Jul 15, 2016

m=136

Explanation:

color(blue)("Shortcut method")

Take the 52 to the other side of the = and change its sign

m=84+52=136

'~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
color(blue)("Using first principles from which the shot cut is derived")

Given:" "color(green)(-52+m=84)

Add color(red)(52) to both sides

color(green)(-52color(red)(+52)+m=84color(red)(+52))

But -52+52=0

0+m=84+52= 136

m=136