ex1) 1.6×x+1.5=2.3
1.6×x=2.3-1.5
1.6×x=0.8
x=0.8÷1.6
x=0,5
verificare:1,6×0.5+1,5=0,8+1,5=2,3
ex2)0.2×(4×x-0,25=2.5
(4×x-0.25)=3,75:0.5
4×x-0.25=18.75
4×x=18.75+0.25
4×x=19
x=10÷4
x=4,75
verificare:0.2×(4×4,75-0.25)=0,2×(19-0.25)=0.2×18.75=3,75
SPER CA TE-AM AJUTAT!!
