Question

Реши линейное уравнение:

−9,12r+(8,5−9)=−19+8,5−9,22r.

Answer 1

Ответ:

$- 9.12r +( 8.5 - 9) = - 19 + 8.5 - 9.22r \\ - 9.12r - 0.5 = - 10.5 - 9.22r \\ - 9.12r + 9.22r = - 10.5 + 0.5 \\ 0.1r = - 10 \\ r = - 10 \div 0.1 \\ r = - 100$