Question 1058593

by eliminating solve the pairs of simultaneous equation 6x-5y=-7  3x+4y=16
<pre>6x - 5y = - 7 ------ eq (i)
3x + 4y = 16 ------- eq (ii)
You only need to CHANGE 1 equation to solve by ELIMINATION, and that's equation (ii)
- 6x - 8y = - 32 --------- Multiplying eq (ii) by - 2 ------ eq (iii)
- 13y = - 39 ------- Adding eqs (iii) & (i)
y = {{{highlight_green(matrix(1,3, (- 39)/(- 13), or, 3))}}}
Now, just substitute 3 for y in any of the 2 original equations and solve for x
It's as simple as that....nothing CONFUSING, nothing COMPLEX!!!