Question

Find the value of k ,if y=-3, 3x+7y=k

Answer 1

Answer:

3x+7y=k

3x-21=k

3(x-7)=k

Answer 2

Answer:

k=3x-21

Step-by-step explanation:

for y= -3

3x+7y=k

3x+7(-3)=k

3x-21=k

k= 3x-21

=3(x-7)