(13.2-x + 2.8) divided by 3 = 5
13.2-x+2.8=5×3
13.2-x+2.8=15
x=13.2+2.8-15
x=1
20 divided by x equals 8 / 13
x=20X13/8
x=65/2
13.2-x+2.8=5×3
13.2-x+2.8=15
x=13.2+2.8-15
x=1
x=20X13/8
x=65/2