Algebra 1

Solve for X

100

x+7=19

12

200

x−14=−3

11

300

5x−8=2x+13

−9

400

5x−8=2x+13

7

500

(3x-5)/4=(x+7)/2

19

Solve for 2 variables

100

x+y=15 and x=9

x = 9, y = 6

200

2x+y=17 and x−y=4

x = 7, y = 3

300

x/2+y=8 and x−y=4

x = 8, y = 4

400

3(x−2)+y=16 and 2x−y=9

x = 5, y = 1

500

(2x-3y)/4=2 and x+y=11

x = 7, y = 4

Negative

100

−3x+7=−11

x = 6

200

4−2x=−18

x=11

300

−3(2x−4)+2(x+6)=24

0

400

4(x+3)−7=−23

x=−7

500

(2x-3)/4+5=-3

x=−13

Fractions

100

x+1/2=5/2

2

200

x*1/3=8

24

300

x*23/5-7=24/2*3

215/23

400

2x/5+3=11

20

500

x*6/4-7*6=63/5-7 (you can get help)

476/15

???

100

A number increased by 8 equals 21. What is the number?

x = 13

200

Five times a number, decreased by 7, equals 28. What is the number?

x = 7

300

Three times a number plus 12 equals twice the number plus 25. What is the number?

x = 13

400

Half of a number, increased by 9, equals 3 less than the number. What is the number?

x = 24

500

A number is multiplied by 3/4. Then 5 is subtracted from the result. The answer is equal to 2 less than half the original number. What is the number?

x=12