2,4Q-(Q-4,2)=-6,3+(0,4Q+3,3)

Question

2,4Q-(Q-4,2)=-6,3+(0,4Q+3,3)

Answer 1

2.4Q-(Q-4.2)=-6.3+(0.4Q+3.3)
2.4Q-Q+4.2=-6.3+0.4Q+3.3
1.4Q+4.2=-3+0.4Q
1.4Q-0.4Q=-3-4.2
Q=-7.2
Ответ: -7.2