3. Зх — 5у = 19, 7x - Зу = 1
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Answered by
2
Step-by-step explanation:
Given Equation is 3x - 5y = 19
= > 3x = 19 + 5y
= > x = (19 + 5y)/3 ------- (1)
Given Equation is -7x + 3y = -1 ------ (2)
Substitute (2) in (1), we get
= > -35y - 133 + 9y = -3
= > -133 -26y = -3
= > -26y = 130
= > y = -5.
Substitute y = -5 in (2), we get
= > -7x + 3y = -1
= > -7x + 3(-5) = -1
= > -7x - 15 = -1
= > -7x = 14
= > x = -2.
Therefore the value of x = -2, y = -5.
Answered by
0
Answer:
3x - 5y =19
7x-3y =1
Using elimination method
Multiplying eqn I by 3 and ii by 5, and subtracting
9x - 15y = 57
35x - 15y = 5
Subtracting..... -26x = 52
X= -2
and y = -5
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