Advertisements
Advertisements
प्रश्न
The value of y for which the expressions (y – 15) and (2y + 1) become equal is ______.
विकल्प
0
16
8
–16
उत्तर
The value of y for which the expressions (y – 15) and (2y + 1) become equal is –16.
Explanation:
It is given that both the expressions are equal.
So, the equation is
⇒ y – 15 = 2y + 1
⇒ y – 2y = 1 + 15 ......[Transposing 2y to LHS and (–15) to RHS]
–y = 16
Multiplying both sides by (–1), we get
y = –16
APPEARS IN
संबंधित प्रश्न
If x = 1, y = 2 and z = 5, find the value of 2x2 − 3y2 + z2
If p = −2, q = −1 and r = 3, find the value of p3 + q3 + r3 + 3pqr
Write the coefficient of p in −2pqr
Identify the monomials, binomials, and trinomials in the following:
a + b − 2c
Subtract:
5a + 7b − 2c from 3a − 7b + 4c
If `(5x)/3 - 4 = (2x)/5`, then the numerical value of 2x – 7 is ______.
The expression obtained when x is multipled by 2 and then subtracted from 3 is ______.
Which out of the following are expressions with numbers only?
- y + 3
- (7 × 20) − 8z
- 5 (21 − 7) + 7 × 2
- 5
- 3x
- 5 − 5n
- (7 × 20) − (5 × 10) − 45 + p
Give expression for the following case.
− p divided by 5
In a Mathematics quiz, 30 prizes consisting of 1st and 2nd prizes only are to be given. 1st and 2nd prizes are worth ₹ 2000 and ₹ 1000, respectively. If the total prize money is ₹ 52,000 then show that:
- If 1st prizes are x in number the number of 2nd prizes are ______.
- The total value of prizes in terms of x are ______.
- The equation formed is ______.
- The solution of the equation is ______.
- The number of 1st prizes are ______ and the number of 2nd prizes are ______.