Question

question 7
5x + y = 9
10x - 7y = -18
type your answer in the form (x, y)

Explanation:

Step1: Isolate $y$ from first equation

$y = 9 - 5x$

Step2: Substitute $y$ into second equation

$10x - 7(9 - 5x) = -18$

Step3: Simplify and solve for $x$

$10x - 63 + 35x = -18$
$45x = 45$
$x = 1$

Step4: Substitute $x=1$ to find $y$

$y = 9 - 5(1) = 4$

Answer:

$(1, 4)$