Question

What is the value of x in the equation 3 x minus 4 y equals 65, when y equals 4?

x equals 13 and one-fourth
x equals 21 and two-thirds
x equals 23
x equals 27

Answer 1

x=27

because

3x-4y=65

replace the y with 4

3x-4(4)=65

-4(4)= -16

3x-16=65

add the 16 to both sides

3x=81

divide both by 3 and you get x=27

Explanation:

Answer 2

x=27
because
3x-4y=65
replace the y with 4
3x-4(4)=65

-4(4)= -16
3x-16=65
add the 16 to both sides

3x=81

divide both by 3 and you get x=27