Question

If x=3 then find from the equation
5x+3y=9​

Answer 1

Answer:

Now , putting the above result in eq ( i ) :—

5x + 3 ( 1/2 ) = 9

5x + 3/2 = 9

5x = 9 — 3/2

5x = 15/2

x = 3/2

Hence , x = 3/2

Answer 2

Step-by-step explanation:

• 5x + 3y = 9
• 5(3) + 3y = 9
• 15 + 3y = 9
• 3y = 9 - 15
• 3y = -6

• y = $\frac{-6}{3}$

• y = -2

Proof :-

LHS = 5x + 3y

RHS = 9

• 5(3) + 3(-2)
• 15 + (-6)
• 15 - 6
• 9

:. LHS = RHS