Advertisements
Advertisements
Question
6b + 40 = – 100 – b
Solution
6b + 40 = – 100 – b
⇒ 6b + b = - 100 - 40
⇒ 7b = - 140
⇒ b = `(-140)/7 = -20`
∴ b = - 20
APPEARS IN
RELATED QUESTIONS
Solve the following equation:
`(4(y + 2))/5 = 7 + "5y"/13`
Solve the following equation:
(x - 5)(x + 3) = (x - 7)(x + 4)
Solve the following equation:
`"x"/9 = 2`
9 (a+ 5) + 2 = 11
Solve: `"x"/2 + "x" = 9`
Solve: `("y" + 2)/3 + ("y" + 5)/4 = 6`
Solve: `("3a" - 2)/7 - ("a" - 2)/4 = 2`
Solve: `("x" - 1)/5 - "x"/3 = 1 - ("x" - 2)/2`
Solve: 2x + 20% of x = 12.1
A number is 15 more than the other. The sum of of the two numbers is 195. Find the numbers.
A man is four times as old as his son. After 20 years, he will be twice as old as his son at that time. Find their present ages.
Solve the following equations for the unknown: `(3x - 5)/(7x - 5) = (1)/(9), x ≠ (5)/(7)`
Solve the following equations: a(2x - b) - b(3x - a)+a(x + 1) = b(x + 5)
Two complementary angles differ by 14°. Find the angles.
The present age of a man is double the age of his son. After 8 years, the ratio of their ages will be 7 : 4. Find the present ages of the man and his son.
If a motorcyclist drives at the rate of 24km/h, he reaches his destination 5 minutes too late. If he drives at the rate of 30 km/h, he reaches his destination 4minutes too soon. How far is his destination?
Two planes start from a city and fly in opposite directions, one averaging a speed of 40 km/h more than that of the other. If they are 3400km apart after 5 hours, find their average speeds.
The length of a rectangle is 30 cm more than its breadth. The perimeter of the rectangle is 180 cm. Find the length and the breadth of the rectangle.
In an isosceles triangle, each of the two equal sides is 4 cm more than the base. If the perimeter of the triangle is 29 cm, find the sides of the triangle.
What number decreased by 12% of itself gives 1584?
