solve the following simultaneous equation for 4x -3y = 23 3x + 4y = 11
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Step-by-step explanation:
the two equations are
4x-3y=23----------(1)×3
3x+4y=11-----------(2)×4
12x-9y=69----------(3)
12x+16y=44---------(4)
add equation (3) and (4)
-25y= 25
y=-1
put y=-1 in equation (3)
12x-9(-1)=69
12x+9=69
12x=69-9
12x=60
x=5
therefore x=5, y=-1
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