Question

Помогите решить

/-0,42/=/y/*/-2,8/

Answer 1

/-0.42/=/y/*/-2.8/
0.42=/y/*2.8
/y/=0.42:2.8
/y/=0.15
y=0.15 и y=-0.15

Answer 2

-0.42=у*(-2.8)
-у=-2.8*(-0.42)
-у=1.176
у=-1.176