Pre Algebra

combine like terms

100

3a+4a+4a

11a

200

3a+34+6a

9a+34

300

3ab+4a+90ab

93ab+4a

400

54a+30b+23a+7b

77a+37b DOUBLE 

500

23a+34+10+40a +15

63a +59

x=10

100

3.x=

30

200

4(x+2)=

48

300

5.x+15

65   DOUBLE 

400

3(x.3)

270

500

4x+5x +10

100

one/twostep

100

3a=30

a=10

200

5+a=85

a=80 DOUBLE 

300

5a+20=70

a=10

400

12a -15=129

a=12

500

4(a+6)=12

a=9

reduce the fraction

100

8/10

4/5

200

16/20

4/5

300

25/100

1/4

400

30/60

1/3 DOUBLE 

500

14/49

2/7

two step

100

2x+3=21

x=9

200

x/2 +3=21

x=36

300

3x+3=21

x=6

400

x/4+3=21

x=72

500

3x+3x+3=21

x=3

DOUBLE