Solve for "y"
8y-4x=2

How to do this , and can some one explain

One number is 4 less than 3 times a second number. if 3 more than two times the first number is decreased by 2 times the second number, the result is 11. use the substitution method. what is the first number?

Solve the system of equations using the substitution method. {y=−3x+7x=−2y−16 enter your answers in the boxes.