Question

Solve. (The answer is supposed to be in order pairs.) (Image Below.)

Answer 1

Answer:

$\huge{\fbox{\fbox{\bigstar{\mathfrak{\red{answer}}}}}}$

Equation 1=> x + y = 4

Equation 2=> 7x + 9y = 42

Multiplying equation 1 with 7

=> 7x + 7y = 28 -------- (3)

Subtracting equation (3) from equation 2 -

=> 7x + 9y = 42

.... -7x - 7y = -28

=> 0 + 2y = 14

=> 2y =14

=>y = $\frac{14}{2}$

=> $\huge\pink{y=7}$

$\orange{Using\:value\:of\:y\:in\:equation\:1}$

=> x + y = 4

=> x + 7 = 4

=> x = 4 - 7

=> $\huge\blue{x=-3}$

Step-by-step explanation:

$<marquee>$Hope it helps..