How do you solve #-52+m=84#?

1 Answer
Jul 15, 2016

Answer:

#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#