Question

1.8x +2y = 4
9x + 6y = 3

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Answer 1

Answer:

(0.6, - 0.4)

Step-by-step explanation:

8x + 2y = 4 ...... (1)

9x + 6y = 3 ...... (2)

Let multiply by (- 3) equation (1) and add to equation (2)

- 24x - 6y = - 12

9x + 6y = 3

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- 15x = - 9 ===> x = $\frac{3}{5}$ = 0.6

8 × $\frac{3}{5}$ + 2y = 4

2y = - $\frac{24}{5}$ + 4

y = - $\frac{12}{5}$ + 2

y = - 0.4