Решите уравнения: Х - 2 3/4 - 1 3/4 = 4.5 X * 2.5 * (-0.4) = - 10

Question

Решите уравнения:
Х - 2 3/4 - 1 3/4 = 4.5
X * 2.5 * (-0.4) = - 10

Answer 1

Х=4.5+2 3\4+1 3\4
Х=7 40\20-7 2\1
Х=7 2/1

Х*2.5* (-0.4)=-10
х=-10:2.5:(-0.4)
х=-4:(-0.4)
х=10