Advertisements
Advertisements
प्रश्न
Solve the following equation:
`("x"- 8)/5 = ("x" - 12)/9`
उत्तर
⇒ 9(x - 8) = 5(x - 12) ...(by cross multiplying)
⇒ 9x - 72 = 5x - 60
⇒ 9x - 5x = -60 + 72
⇒ 4x = 12
⇒ x = `12/4`
⇒ x = 3
APPEARS IN
संबंधित प्रश्न
24 = y + 2y + 3 + 4y
Six times a number is 72, find the number.
A number is 15 more than the other. The sum of of the two numbers is 195. Find the numbers.
Solve the following equation for the unknown: `("a" - 1)/(2) - ("a" + 1)/(3)` = 5 - a
Solve the following equations: a(x - b) -b (x - a) = a2 - b2
The sum of three consecutive odd natural numbers is 99. Find the numbers.
Divide 300 into two parts so that half of the one part is less than the other by 48.
The speed of a boat in still water is 8km/h. It takes the same time in going 20km in downstream as it takes in going 12 km upstream. Find the speed of the stream.
The perimeter of a rectangular field is 80 m. If the breadth is increased by 2 m and the length is decreased by 2 m, the area of the field increases by 36 m2. Find the length and the breadth of the field.
In a class there are a certain number of seats. If each student occupies one seat, 9 students remain standing and if 2 students occupy one seat, 7 seats are left empty. Find the number of seats in the class.