Question

2/1x-28=50 4x+3/2=4/5 x-7/2x=28/15 3x-1.2=3.6 0.9x+1.3x=5.28

Answer 1

2/1x-28=50

2/1x=50+28=78

x=78*2

x=156

4x+3/2=4/5

4x=4/5 -3/2

4x=-7/10

x=-7/10/4

x=-7/40

x-7/2x=28/15

-5/2x=28/15

x=-28/15 *2/5

x=56/75

3x-1.2=3.6

3x=3.6+1.2

3x=4.8

x=4.8/3

x=1.6

0.9x+1.3x=5.28

2.2x=5.28

x=5.28/2.2

x=2.4