Question

Пж помогите
2,1+12+(7,97s)=-9+2,1-2,03s
s=......

Answer 1

Объяснение:

$2.1 + 12 + (7.97s) = - 9 + 2.1 - 2.03s \\ 12 + 7 .97s = - 9 - 2.03s \\ 7.97s + 2.03s = - 9 - 12 \\ 10s = - 9 - 12 \\ 10s = - 21 \div 10 \\ s = - \frac{21}{10} = - 2 \frac{1}{10} = - 2.1$