Question

the sum of number and 10 is 14 find the number x​

Answer 1

Answer:

x=4

Step-by-step explanation:

Let the number be x

Sum of the number and 10 is 14

x+10=14

x=14-10

Therefore, x=4

Answer 2

Answer:

First, set up a system of equations with the information given:

2 numbers (x and y)

x+y = 14

and x-y + 10

If you each equation by positive 2, one gets 2x+2y = 28 and 2x-2y = 20

The 'y-terms' cancel out or equal zero when adding, so 4x = 48, divide by 4 on each side and x or the first number equals 12.

Plug 12 back into the equation for 'x' and subtract 12 on both sides so that y=2

The difference of 12-2=10 and the addition of 12 and 2 equals 14

Cool, huh!? I hope that this helps out your daughter's understanding.

Step-by-step explanation:

hope this helps you