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Rezolvati;c)x-15-2=25
D)400-(20+30+x)=100
E(80+×-40+70=435

Răspuns :

CosmoteRo
x-15-2=25
x-15=25+2
x-15=27
x=27+15
x=42

400-50-x=100
400-50-100=x
x=250

80+x+30=435
x=435-80-30
x=325
c)x-15-2=25
x=25+15+2
x=42


d)400-(20+30+x)=100
400-100=20+30+x
300=50+x
x=300-50
x=250


e)80+×-40+70=435
x=435-80+40-70
x=325