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Mathematics
Davian Barron
31 August, 20:57
If x+y=580 and x=3y then what are x and y?
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Jeffery Marsh
31 August, 21:41
0
x=435, y=145
Step-by-step explanation:
You substitute x for 3y in this equation and get
3y+y=580
from here you simplify
4y=580
and divide 580 by 4 to get what y is
y=580/4
y=145
now since x=3y you mutiply y by 3
x=3 (y)
x=3 (145)
x=435
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Young
31 August, 22:18
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x = 435
y = 145
Step-by-step explanation:
The key to this problem is that x = 3y. So put that into
x + y = 580 Substitute 3y for x
3y + y = 580 Combine like terms
4y = 580 Divide by 4
4y / 4 = 580 / 4 Do the division
y = 145
x + y = 580 Substitute the value for y
x + 145 = 580 Subtract 145 from both sides
x = 580 - 145 Combine
x = 435
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