Five times a number increased by 7 is 27.

बेरीज

Let the number be x

Then, five times of number be 5x

Since, it is increased by 7 i.e. 5x + 7 and it gives the result 27

Hence, the equation formed is 5x + 7 = 27.

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पाठ 4: Simple Equations - Exercise [पृष्ठ ११२]

पाठ 4 Simple Equations
Exercise | Q 63. | पृष्ठ ११२

If p = −2, q = −1 and r = 3, find the value of 2p² − q² + 3r²

Identify the monomials, binomials, and trinomials in the following:
x⁵

Simplify:

2p³ − 3p² + 4p − 5 − 6p³ + 2p² − 8p − 2 + 6p + 8

How much is a + 2a − 3c greater than 2a − 3b + c?

Find the variables from the clues given below and solve the cross-word puzzle.

Across	Down
x + 40 gives 100	x is 1005 multiplied by 6
7 reduced from t gives 31	t ÷ 7 = 5
z is 5 added 5 times	p is the predecessor of first 3 digit number
v is the whole number zero plus number of days in a ordinary year	z is the number of weeks in a year (digits reversed)
k is 24 added to 25	k is 11 times 4
u is 2 added to two times 11 gives the number of hours in a day	u is product of 23 and 9
a is 20 more to 40	a is 4 added to the product of 12 and 5
s minus 1 gives 246 is the number of letters in Tamil language	m is the successor of 9

‘One third of a number added to itself gives 8’, can be expressed as `x/3 + 8 = x`.

Omar helps his mother 1 hour more than his sister does.

Leela contributed Rs. y towards the Prime Minister’s Relief Fund. Leela is now left with Rs. (y + 10000).

Khader’s monthly salary was Rs. P in the year 2005. His salary in 2006 was Rs. (P + 1000).

The number of girls enrolled in a school last year was g. The number of girls enrolled this year in the school is 3g – 10.