Solve the simultaneous equations y = 3x; 4y - 5x =14
MATHEMATICS
WAEC 1993
Solve the simultaneous equations y = 3x; 4y - 5x =14
- A. -2,-6
- B. 2,6
- C. 2,-6
- D. -2,6
Correct Answer: B. 2,6
Explanation
y = 3x ... (i);
4y - 5x =14 ... (ii)
Put 3x for y in (ii).
4(3x) - 5x = 14
12x - 5x = 14
7x = 14 \(\implies\) x = 2.
y = 3x = 3(2) = 6
(x, y) = (2, 6)
Post an Explanation Or Report an Error
If you see any wrong question or answer, please leave a comment below and we'll take a look. If you doubt why the selected answer is correct or need additional more details? Please drop a comment or Contact us directly. Your email address will not be published. Required fields are marked *