Step-by-step explanation:
if y = 2x then write 2x in the first equation instead of y
6x + 7 × 2x = 20
20x = 20
x = 1
Answer:
x=1, y = 2
Step-by-step explanation:
It tells you that y=2x, so wherever there is a "y" in the
problem simplify that and replace it with 2x. Then solve the
equation for x. Once you find the value of x, you can
then multiply that value by 2 to find the value of y.
6x + 7(2x) = 20 multiply the 7 through the parenthesis
6x + 14x = 20 add the like terms together
20x = 20 divide both sides by 20
20x/20 = 20/20
x = 1
