Question

Va rog ajutati-ma
Dau coronita celui mai bun raspuns

Answer 1

(200-x):10+90=100
(200-x):10=100-90
(200-x):10=10
200-x=10*10
200-x=100
x=200-100
x=100

500-y+(300:10-20)=60
500-y+(30-20)=60
500-y+10=60
500-y=60-10
500-y=50
y=500-50
y=450

(30*10)-(4*z+50*2)=100
300-(4*z+100)=100
4z+100=300-100
4z+100=200
4z=200-100
4z=100
z=100:4
z=25