Advertisements
Advertisements
Question
Check whether the value given in the bracket is a solution to the given equation or not:
7n + 5 = 19 (n = − 2)
Advertisements
Solution
7n + 5 = 19 (n = −2)
Putting n = −2 in
L.H.S. = 7n + 5
= 7 × (−2) + 5
= −14 + 5
= −9 ≠ 19
As L.H.S. ≠ R.H.S.,
Therefore, n = −2 is not a solution of the given equation, 7n + 5 = 19.
APPEARS IN
RELATED QUESTIONS
Check whether the value given in the bracket is a solution to the given equation or not:
7n + 5 = 19 (n = 2)
Add the following:
\[2 x^2 - 3xy + y^2 \]
\[ - 7 x^2 - 5xy - 2 y^2 \]
4 x2 + xy - 6 y2
_______________
Solve the following equation by the trial-and-error method: 11 + x = 19
Solve the following equation and verify the answer:
The coefficient of x in −5xyz is
`1/3(x+7+z)` is a
The sum of three consecutive odd numbers is 75. Which is the largest among them?
The equation 4x = 16 is satisfied by the following value of x ______.
I think of a number and on adding 13 to it, I get 27. The equation for this is ______.
Change the following statements using expressions into statements in ordinary language.
(For example, Given Salim scores r runs in a cricket match, Nalin scores (r + 15) runs. In ordinary language − Nalin scores 15 runs more than Salim.)
A notebook costs ₹ p. A book costs ₹ 3 p.
