1) 2x + 7 2) 10x + 1 3) (x-4)² 4) 2x/5
5) 2x + 10 = 36 6) 3(x-7) = 18 7) 4x/8 = 3
Explanation:
1) let the number = x
twice the number = 2x
The sum of twice a number and 7 = 2x + 7
2) let the number = x
product = multiplication
the product of a number and 10 = x * 10 = 10x
The product of a number and 10, increased by 1 = 10x + 1
3) let the number = x
four less than a number = x -4
four less than a number squared: (x-4)²
4) let the number = x
twice the number = 2x
twice a number divided by 5 = 2x/5
5) let the number = x
twice the number = 2x
the sum of twice a number and 10 = 2x+ 10
the sum of twice a number and 10 is 36:
2x + 10 = 36
6) let the number = x
the difference of a number and 7 = x -7
three times the difference of a number and 7 = 3(x - 7)
three times the difference of a number and 7 is 18:
3(x-7) = 18
7) let the number = x
four times a number = 4x
four times a number divided by 8 is 3:
4x/8 = 3