Question

elimination method 3× + 5y = 4 and 5× + 2y = 13​

Answer 1

Answer:

x = 3

y = -1

Step-by-step explanation:

Using Elimination method,

(3x + 5y = 4) × 2 ------ (i)

6x + 10y = 8 ------ (ii)

(5x + 2y = 13) × 5 ------ (iii)

25x + 10y = 65 ------ (iv)

Subtract (iv) - (ii)

25x + 10y - (6x + 10y) = 65 - 8

25x + 10y - 6x - 10y = 57

19x = 57

$x=\frac{57}{19} \\\\x=3$

25x + 10y = 65

25(3) + 10y = 65

75 + 10y = 65

10y = 65 - 75

10y = -10

$y=\frac{-10}{10} \\\\y=-1$

Answer 2

Answer:

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Step-by-step explanation:

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