Top Answer

2(x+9)=56

2x+18=56

-18 -18

2x=18

x=9

check:

2(9+9)=56

2(18)=56

56=56 :)

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x+2x3x

18

The sum of two number times a third numberis equal to the sum of each addend times the third number

That's the distributive property.

It is either two times the number or 0.

Let x represent the number. 2 times the number would be 2x, and 5 times the number would be 5x. The sum of the two would be 2X + 5x = 7x

(-8,1)

21

You get the sum of 11 two ways; 5,6 and 6,5.

2*(n+15) = 6n

Let's call the number XTwice the number would be 2XFour times the same number would be 4XThe sum of these two is 2X + 4X = 6XThe answer is therefore six times the number.

27

i think it is if you simlify it the answer would be x+(-2)>8 your welcome aislinn

i am a two digit # my tens digit# is 3 times my ones digit #and the sum of my digit is 12 what am i

x = 8, y = 5

num

The two numbers that solve this problem are 5 and 15. The sum of 5 and 15 is equal to 20, and 15 is indeed 3 times 5.

20 and 5

3x+2

It's the number of sides minus two, then times 180.

The larger number is 12.

The sum of 45 and 15 equals 60. 15 x 3 equals 45.

The sum of two odd numbers or two even numbers is an even number. The sum of an odd number and an even number is an odd number.

5 and 2

one number is 4 less than eleven times another the sum of the two numbers is 92. Find the numbers.