Question

1. $\frac{3 - y}{4}=\frac{1}{9}$

Explanation:

Step1: Cross - multiply

$9(3 - y)=4\times1$

Step2: Expand the left - hand side

$27-9y = 4$

Step3: Isolate the term with y

$-9y=4 - 27$

Step4: Calculate the right - hand side

$-9y=-23$

Step5: Solve for y

$y=\frac{23}{9}$

Answer:

$y = \frac{23}{9}$