Question

Stiind ca a=15,b+c=36 si x-y=24, calculați 4a+5b+5c si ab+ax+ac-ay​

Answer 1

Răspuns:

1. 4a+5(b+c)= 60+5*36= 60+180=240

2.a(b+c+x-y)=a(36+24)=15*60=900

Answer 2

Răspuns:

a=15

b+c=36

x-y=24

________

4a+5b+5c=?

4×a+5(b+c)=4×15+5×36=60+180=240

ab+ax+ac-ay=?

a(b+c)+a(x-y)=15×36+15×24=540+360=900