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subtractions
multiplications
equations by substitution
solving equations
100

how much is 2+3

5

100

how much is 2-1

1

100

how much is 4x4

16

100

y=7x+22

y=-6

(-4,-6)

100

6x-x=-15

x=-3

200

how much is 6+7

13

200

how much is 5-2

3

200

how much is 6x6

36

200

y=4x+6

y=8x+6

(0,6)

200


Tyreese bought a magazine for $5.00 and four big erasers. He spent a total of $25.00. How much did each eraser cost?

each eraser cost 5 dollars

300

how much is 7+9

16

300

how much is 9-2

7

300

how much is 8x8

64

300

y=-4x-8

y=7x+14

(-2,0)

300

-2(x-4)=10

x=-1

400

how much is 34+56

90

400

how much is 17-2

15

400

how much is 9x9

81

400

4x-4y=4

y=-8x=+17

(2,1)

400

7x-3=11

x=-2

500

how much is 77+87

164

500

how much is 37-17

20

500

how much is 17x17

170

500

y=x-14

8x+7y=7

(7,-7)

500

x/6-5=2

x=42