Solve
7x - 3 = 18
x = 3
2x + x = 18
x = 6
The sum of two numbers is 25. One of the numbers exceeds the other by 9. Find the numbers.
x + 9
= 8 + 9
= 17
If a and b are positive integers, then the solution of the equation ax = b will always be a
(a) positive number
(b) negative number
(c) 1
(d) 0
Positive Number
x/-2 = -4
x = 8
3x - 4 + 5x = 0
x = 1/2
A man being asked how much he gave for his watch, replied; If you multiply the price by 4, and to the product add 70, and from this sum subtract 50, the remainder will be equal to 220 dollars.
x = 50
If k + 7 = 10, find the value of 9k – 50.
-23
2(-x + 1) = -1
x = 1.5
x+x+50+x-20 = 180
x=50
The length of a rectangle is twice its breadth. If the perimeter is 72 metre, find the length and breadth of the rectangle.
length of the rectangle = 2x
= 2 × 12 = 24
If one-third of a number exceeds its one-fourth by 1, find the number.
12
1-3x/2 = 5
x= -3
2x-3 = x+2
x = 5
Alisha is 5 years younger than Ayesha. Four years later, Ayesha will be twice as old as Alisha. Find their present ages.
Aaron’s present age = x - 5
= 6 - 5
= 1
Each of the 2 equal sides of an isosceles triangle is twice as large as the third side. If the perimeter of the triangle is 30 cm, find the length of each side of the triangle.
the third side of the triangle = 6 cm
and other two equal sides are 2 × 6 = 12 cm each
-5 (2x - 4)/3 = 30
x = -7
5x + 1 = 15- 2x
x = 2
The difference between the two numbers is 48. The ratio of the two numbers is 7:3. What are the two numbers?
84 and 36
The length of a rectangle is twice its breadth. If its perimeter is 60 cm, find the length and the breadth of the rectangle.
breadth = 10 cm
and the length = 10 × 2 = 20 cm