Question

Дакожите тожество
(3х-7)•0.6-.08•(4х-5)-(-1.7-1.4х)=1.5

Answer 1

$3x times 0.6 - 7 times 0.6 - 0.8 times 4x \ - 0.8 times ( - 5) + 1.7 + 1.4x =$
$1.8x - 4.2 - 3.2x + 4 \ + 1.7 + 1.4x = 1.8x - 3.2x \ + 1.4x - 4.2 + 4 + 1.7 = 1.5$
$1.5 = 1.5$