Solve: 7x+4y = 3 for y

Question

Can you please show me how to do the problem and also check it? My professor asks for a check on ALL problems and that is the hardest part for this one. Thank you in advance :)

Answer 1

7x + 4y = 3

Step 1 - Isolate the variable:

7x + 4y = 3

-7x -7x

4y = 3 - 7x

Subtract the 7x from both sides to get the 4y by itself.

Step 2 - Finish isolating the variable:

4y = 3 - 7x

4y/4 = (3 - 7x) / 4

y = (3 - 7x) / 4

y = (3/4) - (7x/4)



Answer 2

7x + 4y = 3

first step is to isolate 4y as the only term on the left side by subtracting 7x from both sides

7x - 7x + 4y = 3 - 7x

4y = 3 - 7x

Next step is to solve for y by dividing both sides by 4

4y/4 = (3-7x)/4

y = (3-7x)/4