Question

Решите срочно плиз!!

Answer 1

4) -0.8х=-9.1+6.3
-0.8х=-2.8
х=-2.8:(-0.8)
х=3.5

5) -5/18x=4/9*1/4
-5/18x=1/9
x=1/9:(-5/18)=1/9*(-18/5)
x=-2/5