Question

solve by using substitution method 3x+4y+6,3x-y-9=0

Answer 1

Hey dear here is your answer!!!!!

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Let's start off with:-

3x + 4y + 6 = 0

So, 3x = - 4y - 6     ...(1)

Substitute this value in:-

3x - y - 9 = 0

From equation - (1)

(- 4y - 6) - y - 9 = 0

- 4y - 6 - y -9 = 0

Add like terms:-

-5y - 15 = 0

Transposing:-

-5y = 15

y = $\frac{15}{-5}$

y = -3

Substitute value of y in any of the equations to get value of x:-

3x - (-3) - 9 = 0

3x + 3 - 9 = 0

3x - 6 = 0

3x = 6

x = $\frac{6}{3}$

x = 2

So, the values of x and y are 2 and -3 respectively !

❣️⭐ Hope it helps you dear...⭐⭐❣️❣️