Simple Algebra: Addition and Subtraction

y=4

d=6

s=3

SOLVE: 5 + s = ?

-First look at the problem to see which letter you need to plug in from the list

-We see that we need s. Looking at the list s=3

-Plug in 3 in place of s

After we plug in the numbers:

5+3=?

Put it in your calculator

5+3=8

y=4

d=6

s=3

SOLVE: 9 - y = ?

-First look at the problem to see which letter you need to plug in from the list

-We see that we need y. Looking at the list y=4

-Plug in 4 in place of y

After we plug in the numbers:

9 - 4 =?

Put it in your calculator to solve:

9 - 4 = 5