Question

решить уравнение 0.7c - 1.3 = -6.9

Answer 1

$0.7c - 1.3 = - 6.9 \\ \\ 0.7 c = 6.9 + 1.3 \\ \\ 0.7c = - 5.6 \\ \\ c = - 8$

Answer 2

Ответ:

$0.7c - 1.3 = - 6.9$

$0.7c = - 6.9 + 1.3$

$0.7c = - 5.6$

$c = - 5.6 \div 0.7$

$c = - 8$