Solve by substitution method: 8y - 3x + 7 = 0 and 2x - y + 4 = 0.
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Answer:
8y - 3x + 7 = 0 ------------------1
2x - y + 4 = 0.------------------2
From 2,
2 x=y-4
x=y-4/2
substitute value of x in 1,
8y-3(y-4)/2=7
8y-3y+12/2=7
5y+12/2=7
5y+12= 7*2=14
5y=14-12=2
y=2/5=0.4
therefore x=(2/5-4)/2
x=(2-20)/5 x (1/2)
x=-18/5 x 1/2
x= -18/10
x= - 1.8
Step-by-step explanation:
x= -1.8
y=0.4
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