Question

Решите уравнение
-5x=30
-0,8x=-5,6
-7x=4
-6x=-8
2/3x=-3/8
40,5:x=-9

Answer 1

$1)-5x=30\\x=-6 \\ \\ 2)-0.8x=-5.6\\x=7 \\ \\ 3)-7x=4\\x=- \frac{4}{7} \\ \\ 4) -6x=-8\\x=1 \frac{1}{3}$

$5) \frac{2}{3} x=- \frac{3}{8} \\x=- \frac{3}{8} : \frac{2}{3} \\ \\ x=- \frac{3*3}{2*8} \\ \\ x=- \frac{9}{16}$
$40.5:x=-9\\x=-4.5$