jay1003 jay1003

21-06-2018
Mathematics

contestada

The sum of two numbers is 28the first number x is three times the second number y

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krissyqte krissyqte

21-06-2018

21 and 7 (((((((*(*(

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perixwinkle perixwinkle

25-06-2018

Let's try to make two equations.
X+Y=28
Since x is three time y, x=3y. Let's fill that in for x.
3y+Y=28
Let's solve first by combining like terms.
4y=28
28÷4=7=y
Y is 7, so that means x must be 21 since their sum is 28.
So, 21=x and 7=y.

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