40-5x=10 60-4x=20 20-2x=10

Question

40-5x=10 60-4x=20 20-2x=10

Answer 1

40-5x=10

5x=40-10

5x=30

x=6

60-4x=20

4x=60-20

4x=40

x=10

20-2x=10

2x=20-10

2x=10

x=5