Learn
A
15 |
B
12 |
C
18 |
D
10 |
E
24 |
A
15 |
B
12 |
C
18 |
D
10 |
E
24 |
Solution
2x − y = 4
6x − 3y = ? ——(1)
2x − y = 4
Then y = 2x − 4
Substituting y in...
2x − y = 4
6x − 3y = ? ——(1)
2x − y = 4
Then y = 2x − 4
Substituting y in (1) we get
6x − 3(2x − 4)
= 6x − 6x + 12
= 12
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