Question

1.Aflati numarul natural x:
a)[(x:7+107):2*10-106]:4=116
b)[(940:x)*2+(3700-1900):100]:2=103
c)(x:4*3-20):7=10

Answer 1

[(X:7+107):2*10-106]:4=116
[(x:7+107):2*10-106]=116*4
(x:7+107):2*10=464+106
(x:7+107):2=570:10
x:7+107=57*2
x:7=114-107
x:7=7
x=7*7
x=49
b)[(940:x)*2+1800:100]=103*2
(940:x)*2+18=206
(940:x)*2=206-18
940:x=188:2
x=940:94
x=10

c)x:4*3-20=7*10
x:4*3=70+20
x:4=90:3
x=30*4
x=120