Question

What is the value of x in the equation 3x-4y=65, when y=4?

x=134
O x=21 / 3
O x=23
X=27

Answer 1

Explanation:

-4 x 4=-16 so you add the 16 to the 65 and get 81 so then you divide the 3 from the x so it would be 81/3=27

Answer 2

`\boxed{ \bold{ \huge{ \boxed { \sf{x = 27}}}}}`

Explanation:

Given, value of y = 4

To find : Value of x

`\sf{3x - 4y = 65}`

plug the value of y

`\dashrightarrow{ \sf{3x - 4 * 4 = 65}}`

Multiply the numbers : 4 and 4

`\dashrightarrow{ \sf{3x - 16 = 65}}`

Move 16 to right hand side and change it's sign

`\dashrightarrow{ \sf{3x = 65 + 16}}`

Add the numbers : 65 and 16

`\dashrightarrow{ \sf{3x = 81}}`

Divide both sides by 3

`\dashrightarrow{ \sf{ (3x)/(3) = (81)/(3) }}`

Calculate

`\dashrightarrow{ \sf{ x = 27}}`

Hope I helped!

Best regards! :D