Question

Solve the equation 3x + 4y = 16 for x.

Answer 1

Answer:

D) X = 16/3 - 4y/3

Explanation

3x + 4y = 16

3x = 16 - 4y

3x = 4 ( 4 - y)

x = 4(4 - y)/3

X= 16 /3 - 4y/3

Answer 2

Answer:

3x + 4y = 16  The rule is you can do any valid operation on both sides of an equation and it will still be equal. Subtract 4y.

3x = -4y + 16  Divide by 3.

x = -4y/3 + 16/3  Answer B.