Question

как решить уравнение 1,2d-0,5×(4d-1)=-0,7(d-2)

Answer 1

1.2d-0.5*(4d-1)=-0.7(d-2)
1.2d-2d+0.5=-0.7d+1.4
1.2d-2d+0.7d=1.4-0.5
-0.1d= 0.9
d= 0.9 / -0.1
d= -9