Question

repede...plz...repede...va rog

Answer 1

a)(y:2)•3=10•3
(y:2)•3=30=》y:2=30:3=》y:2=10=》y=10•2=》y=20

b)(7•9-x•5)-9:3=20
(63-5x)-3=20=》(63-5x)=20+3=》63-5x=23=》5x=63-23=5x=40=》x=40:5=》x=8

d)20•10•30•40•a=0
240.000•a=0=》a=0:240.000=》a=0

Astea sunt raspunsurile corecte,am incercat sa l fac si pe c),dar nu mi a dat..sper ca te am ajutat.