Question

X-384=662
20:4+3.X=59
X:2-4+12=8

Answer 1

X-384=662 / +  384
x= 1.046

20/4 +3 * X = 59 
5 + 3x = 59 /-5 
3x = 54 / :3
x=18

x/2 -4 +12 = 8 / -12
X/2 - 4 = -4 / * 2
X - 8 = -8 /+8
x=0