Question

Exercise 3C/
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1.
Solve the following system
x + 8 y = 19
2x +Il y = 28​

Answer 1

Step-by-step explanation:

2x+16y=38

2x+11y=28

5y=10

y=2

x=3

Answer 2

Answer:

(x + 8 y = 19) × 2

2x +Il y = 28

2x + 16y = 38

2x + 11y = 28

- - -

____________

5y = 10

y = 2

So x + 8 (2) = 19

=> x = 19 -16

=> x = 13