Răspuns :
ax5+40=60
ax5=60-40
ax5=20
a=20/5
a=4
bx3-2=7
bx3=7+2
bx3=9
b=9/3
b=3
doar atat am putut succes in continuare
ax5=60-40
ax5=20
a=20/5
a=4
bx3-2=7
bx3=7+2
bx3=9
b=9/3
b=3
doar atat am putut succes in continuare
(a×5)+40=60
a×5=20
a=20:5
a=4
(b:3)-2=7
b:3=9
b=3
3c-15=45
3c=60
c=20
2d+10=100
2d=90
d=45
e:2-18=1
e:2=19
e=38
f:4+10=20
f:4=10
f=40