Question

3,8а+7,7+1,7b+2.5a+11.2+4.6b если а+b+3=10

Answer 1

3,8а+7,7+1,7b+2.5a+11.2+4.6b если а+b+3=10
3,8а+7,7+1,7b+2.5a+11.2+4.6b=6,3а+6,3b+18,9=6,3·(а+b+3)=6,3·10=63