Question

Va rog: Determina numerele naturale a si b stiind ca a ·b=240 si a·(b+5)=300.

Answer 1

a*(b+5)=300
a*b+a*5=300
240+a*5=300
a*5=300-240
a*5=60
a=60:5
a=12

12*b=240
b=240:12
b=20.