Question

va rog AJUTATIMA altfel imi pune profa 4

Answer 1

(b+c)-(a+b)=b
b=7-5=2
a+b=5
a+2=5
a=3
b+c=7
2+c=7
c=7-2
c=5
2a+5b+3c=
2×3+5×2+3×5
=6+10+15
=16+15
=31
Cu placere!❤❤❤

Answer 2

a+b = 5

b+c = 7

2a+5b+3c = 2a+2b+3b+3c = 2(a+b)+3(b+c) = 2x5+3x7 = 10+21 = 31