If x + 2y = 15, what is the value of 3x + 6y/5
2 answers:
Answer:
9 is the answer.
Step-by-step explanation:
Given:
- x + 2y = 15
We can tell that '3x + 6y' is basically '15 x 3' because the whole equation has been multiplied by three. Therefore, 3x + 6y must equal 45.
=> 3x + 6y = 45
But we need to divide 45 by 5 to get the solution because the 3x + 6y has also been divided by 5.
=> 45/5
=> 9
Therefore, 9 is the answer.
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x=0 or x=5
y = x - 2
1)
x=0
y = 0 - 2= -2
2)
x=5
y=5-2=3
Answer
x=0 , y=-2
or
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y=x-2
x=0 or x=5
y = x - 2
1)
x=0
y = 0 - 2= -2
2)
x=5
y=5-2=3
Answer
x=0 , y=-2
or
x=5 , y=3</span>