Question

5(6.1-4.2a)+6.3a-4.7 упростите выражение 0.3(b-8)+b+4 2(3x-y)+5(2y-x)

Answer 1

$5(6.1-4.2a)+6.3a-4.7=30.5-21a+6.3a-4.7=25.8-14.7a$  25.8-14.7a
$0.3(b-8)+b+4=0.3b-2.4+b+4=1.3b+1.6$  1.3b+1.6
$2(3x-y)+5(2y-x)=6x-2y+10y-5x=8y-x$  8y-x