Kris' Algebra post

Solving one step equations

solve by inspection

15+b=23

Isolate the variable

15+(-15)b=23-15

We do 23-15 and that will give you B

n=8

Now varify your answer

15+b=23

15+8=23

23=23

^ MAKE SURE YOU DO THIS!

solving with algebra tiles.

1 Step equations

3) 15+b=23

15+8=23

23=23

15) V/8=2

V/8x8=2x8

V=16

V/8=2

16/8=2

2=2

2 Step equation

3) 9x-7=-7

9x-7+7=-7+7

9x=0

9x/9=0/9=0

0=0

9x-7=-7

9(0)-7=-7

-7=-7

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