You have to do the opposite operation! It's a little confusing to write, so google this:
" Khan Academy one step equation fraction "
He's really easy to follow along with!
Solving one step equation
2 1/2 + b = 3 1/4
3 answers
It's the the third link, it'll say "One-step addition & subtraction equations" I hope this helps.
subtract 2 1/2 from both sides. That gives you
b = 3 1/4 - 2 1/2
now simplify:
b = 3/4
b = 3 1/4 - 2 1/2
now simplify:
b = 3/4
3 answers