Answer:

use

Step-by-step explanation:

Just use Tiger-Algebra...It might help you.

answer and step-by-step:

x-3=?

5-3=2

4x+2=?

4(5)+2=?

20+2=22

2x-2=?

2(5)-2=?

10-2=8

9x+2x=?

9(5)+2(5)=?

45+10=55

10-3x=?

10-3(5)=?

10-15=-5

12-4x=?

12-4(5)=?

12-20=-8

x+22=?

5+22=25

2x+15=?

2(5)+15=?

10+15=25

7x=?

7(5)=35

30x=?

30(5)=150

2x+15=?

2(5)+15=0

10+15=25

4x/5=?

4(5)/5=?

20/5=4

5x+x=?

5(5)+5=?

25+5=30

3x²=?

3(5)²=? (5•5=25)

3(25)=75

9x-1²=?

9(5)-1²=? (1•1=1)

45-1=44

i hope it helped