Question

1. 7х = 6
2. 3у = 21
3. 4а+1 = 0
4. 8с – 16 = 0
5. 3 – 3,4a = 0,4a
6. –x + 0,9 = –0,6x
7. 0,6y-4 = 0,4y
8. -х+0,5 = -0,5х

Answer 1

$1)7x = 6$
$x = \frac{6}{7}$
$2)3y = 21$
$y = 7$
$3)4a + 1 = 0$
$a = - \frac{1}{4}$
$4)8c - 16 = 0$
$c = 2$
$5)3 - 3.4a = 0.4a$
$a = \frac{15}{19}$
$6) - x + 0.9 = - 0.6x$
$x = 2.25$
$7)0.6y - 4 = 0.4y$
$y = 20$
$8) - x + 0.5 = - 0.5x$
$x = 1$