РЕШИТЕ УРАВНЕНИЯ 4,2:X=-1 3/5 13/20:(3/8+x)=-2/3

Question

РЕШИТЕ УРАВНЕНИЯ 4,2:X=-1 3/5 13/20:(3/8+x)=-2/3

Answer 1

4,2:X=-1 3/5
4,2:х=-8/5
х=-21/5: 8/5=-21/8=-2 5/8


13/20:(3/8+x)=-2/3
3/8+х=-13/20*3/2
х=-39/40-3/8
х=-(39+15)/40=--54/40=-27/20=-1 7/20 =-1,35