the sum of four times a number and another number is 10. The difference of the two numbers is 35. What is the larger number? Also please explain how you got that answer

Respuesta :

Answer:

The two numbers are 9 and -26.

The larger number is 9.

Step-by-step explanation:

Let the two unknown numbers be x and y.

The sum of a four times a number x and another number y is 10. Hence:

[tex]4x+y=10[/tex]

And the difference between the two numbers is 35. So:

[tex]x-y=35[/tex]

So, we have the system of equations:

[tex]\left\{ \begin{array} \ 4x+y=10 \\ x-y=35 \end{array}[/tex]

From the second equation, we can add y to both sides:

[tex]x=y+35[/tex]

Now, we can substitute this into the first equation:

[tex]4(y+35)+y=10[/tex]

Distribute:

[tex]4y+140+y=10[/tex]

Simplify:

[tex]5y+140=10[/tex]

Subtract 140 from both sides:

[tex]5y=-130[/tex]

Divide both sides by 5:

[tex]y=-26[/tex]

So, the value of y is -26 .

Then it follows that the value of x is:

[tex]x=y+35[/tex]

Substitute -26 for y:

[tex]x=-26+35=9[/tex]

So, our two numbers are 9 and -26.

The larger number is 9.

So, our answer is 9.

Answer:

Yup answers 9

Step-by-step explanation: just took the test

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