Is $y=1\frac{3}{4}$y=134 a solution of $2y\div5=\frac{7}{10}$2y÷5=710?

Yes

No

Is $x=-15$x=−15 a solution of $-\frac{2}{5}x=6$−25x=6?

Is $y=3\frac{1}{2}$y=312 a solution of $8y=28$8y=28?

Is $x=-2$x=−2 a solution of $3x-\left(4x-8\right)=-6$3x−(4x−8)=−6?