Advertisements
Advertisements
Question
Five less than 3 times a number is -20. Find the number.
Advertisements
Solution
Let the required number = x
3 times the number = 3x
5 less than 3 times the number = 3x – 5
According to statement :
3x – 5 = -20
⇒ 3x = -20 + 5
⇒ 3x = -15
⇒ x = -5
Required number = -5
APPEARS IN
RELATED QUESTIONS
Solve the following equation:
`(3"x" + 2)/("x" - 6) = -7`
Separate 178 into two parts so that the first part is 8 less than twice the second part.
The length of a rectangle is twice its width. If its perimeter is 54 cm; find its length.
A man’s age is three times that of his son, and in twelve years he will be twice as old as his son would be. What are their present ages.
Solve: `(3"x" - 2)/3 + (2"x" + 3)/2 = "x" + 7/6`
Solve: `("6x" + 1)/2 + 1 = ("7x" - 3)/3`
The sum of two numbers is 405 and their ratio is 8 : 7. Find the numbers.
Solve the following inequation
x – 6 < 1, where x is a natural number
Solve the following inequation
6x – 7 ≥ 35, where x is an integer
The cost of one pen is ₹ 8 and it is available in a sealed pack of 10 pens. If Swetha has only ₹ 500, how many packs of pens can she buy at the maximum?
