Question

stiind ca a + b= 32 si b+ c =45 calculati valorile nr si sunt 3 subpuncte a b c si a este 2 a +5 b+3 c = b a+5 b + 4 c si c 3 a+7b+4 c

Answer 1

a)a+b=32
b+c=45
2a+5b+3c=
2x(a+b)+3x(b+c)=
2x32+3x45=
64+135=199

b)a+5b+4c=
a+b+4x(b+c)=
32+4x45=
32+180=212

c)3a+7b+4c=
3(a+b)+4(b+c)=
3x32+4x45=
96+180=276