Solving variable equations

1 step

300

9x=18

x=2

400

x-12=74

x=86

500

x-23=8

x=31

2 step

300

3x+10=28

x=6

400

3x+5=17

x=4

500

4x-7=13

x=5

3 step

300

2(x+3)-5(x-1)=8

x=1

400

3(2y+1)+2(3y-4)=19

y=2

500

4m+3m-13=15

x=4

word problems

300

Two brothers bought together 10 books. One bought 4 books. How many books did the other one buy?

x=6

400

You have $40 to spend on packages of diapers. If one package costs $8, how many packages can you buy?

x=5

500

Sarah is 12 years older than her brother. Together, their ages add up to 74 years. How old is Sarah?

x=31