How do you solve #y-8=11#?

1 Answer
Mar 2, 2018

#y=19#

Explanation:

You want to get the variable , #y# on its own so that it reads as

#y# = " a number"#

That is called solving.

To get rid of the #-8#, add on its opposite which is #+8#,

#-8+8=0#

But as it is an equation, you have to do the same to both sides.

#y-8color(blue)(+8) = 11 color(blue)(+8)" "larr# simplify both sides

#y = 19#

This means is you start with #19# and subtract #8# you will end up with #11#

#19-8=11" "larr# this is true