2(x+9)=56
2x+18=56
-18 -18
2x=18
x=9
check:
2(9+9)=56
2(18)=56
56=56 :)
The expression for "the sum of four times a number plus six times another number" can be mathematically represented as (4x + 6y), where (x) is the first number and (y) is the second number. This means you multiply the first number by four, the second number by six, and then add the two results together.
18
That's the distributive property.
21
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.
The expression for "the sum of four times a number plus six times another number" can be mathematically represented as (4x + 6y), where (x) is the first number and (y) is the second number. This means you multiply the first number by four, the second number by six, and then add the two results together.
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
21
(-8,1)
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.
You get the sum of 11 two ways; 5,6 and 6,5.
one number is 4 less than eleven times another the sum of the two numbers is 92. Find the numbers.