Question

What is the value of 'x' in 4x-7y=9 if y = 3?

Answer 1

Answer:

7.5

Step-by-step explanation:

4x - 7(3) = 9

4x -21 = 9

x4 = 30

x= 30/4

x= 7.5

Answer 2

The value of x is 7.5.

Step-by-step explanation:

Since we have given that

$4x-7y=9$

If y = 3

We will put the value of y in the above equation, to get the value of x.

so, it becomes,

$4x-7\times 3=9\\\\4x-21=9\\\\4x=9+21\\\\4x=30\\\\x=\dfrac{30}{4}\\\\x=7.5$

Hence, the value of x is 7.5.

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