Question

Daca x+y=15 si z=2 calculati

a) 3x+3y-5z

b) 7z+14x+14y

Daca x+y=12 si z=3 calculati

a)2x+3z+2y

b)5z+15x+15y

Plss rapid dau coroana

Answer 1

Răspuns:

1.a) 3(x+y)-5z=3×15-10=35

b) 7z+14(x+y)=14+14×15=224

2. a) 2(x+y)+3z=24+9=33

b) 5z+15(x+y)=15+15×12=195

Succes

Answer 2

Răspuns:

Daca x+y=15 si z=2 calculati

a) 3x+3y-5z=3(x+y)-5·2=3·15-10=35

b) 7z+14x+14y=7·2+14(x+y)=14+14·15=14+210=224

Daca x+y=12 si z=3 calculati

a)2x+3z+2y=2(x+y)+3·3=2·12+9=24+9=33

b)5z+15x+15y=5·3+15(x+y)=15+15·12=15+180=195