Question

Find the value of x for which y=-4 is a solution of linear equation 5x-8y=47

Answer 1

Answer:

3

Step-by-step explanation:

5x - 8y = 47 ( y = -4)

5x -8X-4 = 47

5x + 32 = 47

5x = 47-32

5x = 15

x= 15 ÷ 5

x = 3

Answer 2

Answer:

The value of  $x$ is $3$.

Step-by-step explanation:

Since $y=-4$ is a solution of linear equation $5x-8y=47$.

This implies the value of $y$ must satisfies the linear equation $5x-8y=47$.

So, substitute the value $-4$ for $y$ in the equation as follows:

⇒ $5x-8(-4)=47$

⇒ $5x+32=47$

Subtract $32$ from both the sides.

⇒ $5x=15$

Divide the equation by $5$ as follows:

⇒ $x=\frac{15}{3}$

⇒ $x=3$

Therefore, the value of $x$ is $3$.

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