?=2n+7
2(n+7)
2x+7=n
To write twice the sum of a number and 600, you first express the number as a variable, such as ( x ). The sum of the number and 600 can be written as ( x + 600 ). Therefore, twice this sum is represented as ( 2(x + 600) ).
To write twice the sum of a number and four, let the number be represented by the variable ( x ). The sum of the number and four can be expressed as ( x + 4 ). Therefore, twice this sum is written as ( 2(x + 4) ).
2x + 7 = 30 - 7 - 7 2x = 23 x = 23/2 x = 11.5
2x + 7
2(n+7)
18
2x+7=n
2 * (x + 7) 2x + 14 ■
The number is 7.
To write twice the sum of a number and 600, you first express the number as a variable, such as ( x ). The sum of the number and 600 can be written as ( x + 600 ). Therefore, twice this sum is represented as ( 2(x + 600) ).
If the number is n, then twice the number is 2n and the sum of the two is n + 2n = 3n.
2x + 7 = 30 - 7 - 7 2x = 23 x = 23/2 x = 11.5
If: 2x+8 = 7 then x = -1/2
7 + 2x = x + 10 so 2x - x = 10 - 7 x = 3
5 and 2