Solve 4x+y=8 x+y=5 Solving by elimination
2 answers:
Step-by-step explanation:
4x+y=8
x+y=5
5(4x+y)=8
8(x+y)=5
20x+5y=40
8x+8y=40
2x_3y=0
2×_3y
Answer:
y=4,x=1
Step-by-step explanation:
4x+y=8
x+y=5
subtract equation 2 from equation 1
3x + 0=3
3x=3
divide both sides by 3
x=1
substitute for x=1 in equation 2
x+y=5
1+y=5
y=5-1(collecting like terms)
y=4
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Step-by-step explanation:
complement means not choosing an orange
P( not choosing orange) = (apple and fruit) / total
= (4+6) / (4+6+8)
=10/18
= 5/9
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