Question is depicted below:
2 answers:
Answer:
<u><em>(-2, 6) </em></u>
Step-by-step explanation:
<em>10x + 10y = 40 -(1) </em>
<em>5x + 3y = 8 -(2) </em>
<em>
<em>(1) => 10x + 10y = 40 </em>
<em>(2) x 2 => 10x + 6y = 16 </em>
<em>=> 4y = 24 </em>
<em>=> y = 6 </em>
<em>
<em>5x + 3(6) = 8 </em>
<em>5x = -10 </em>
<em>x = -2 </em>
<em>
<em>Solution = (-2, 6) </em>
Solution:
<u>Solve the system of equations to find the value of y.</u>
5x + 3y = 8
2(5x + 3y = 8)
10x + 6y = 16
<u>Substitute the value of y into any equation to find the value of x.</u>
10x + 10y = 40 => 10x + 10(6) = 40 => 10x + 60 = 40 => 10x = -20 => x = -2 <u>Putting them in (x,y) form.</u>
(x,y) ⇒ (x = -2,y = 6) ⇒ (-2,6)
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