Question

Solve, using the substitution method.

2x + 4y = 16
x – 7 = – 4y

A. http://static.k12.com/bank_packages/files/media/mathml_057b3831c0ddd463c0152378a41dd57ed15649d6_1.gif

B. http://static.k12.com/bank_packages/files/media/mathml_c2900361f2b935a4bb6fd5256e13fc00818223a9_1.gif

C. http://static.k12.com/bank_packages/files/media/mathml_f6ecf8fc7c5aec55fa60a2045aa7a671599ce783_1.gif

D. http://static.k12.com/bank_packages/files/media/mathml_b784e6fe78d18ff7f92a849128d30f764a851da3_1.gif

Answer 1

first you have to solve one of equation for one variable
2nd one is easy solve that for x by adding 7 both side

Answer 2

okay so solve for x
let me know please what you get :)