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
L.H.S. = 7n + 5
= 7 × (2) + 5
= 14 + 5
= 19 = R.H.S.
As L.H.S. = R.H.S.
Therefore, n = 2 is a solution of the given equation, 7n + 5 = 19.
APPEARS IN
RELATED QUESTIONS
Complete the last column of the table.
| Equation | Value | Say, whether the Equation is Satisfied. (Yes/No) |
| `m/3 = 2` | m = 6 |
Solve the following equation by trial and error method:
5p + 2 = 17
Write equation for the following statement:
2 subtracted from y is 8.
Simplify:
Solve the following equation and verify the answer:
x − 2 = −5
The number of boys in a school is 334 more than the number of girls. If the total strength of the school is 572, find the number of girls in the school.
Three times a number added to 8 gives 20. Find the number.
When a number is divided by 8, the result is –3. The number is ______.
State which of the following are equations (with a variable). Give reason for your answer. Identify the variable from the equations with a variable.
20 − (10 − 5) = 3 × 5
Complete the table and find the solution of the equation `"z"/3 = 4` using the table.
|
z |
8 |
9 |
10 |
11 |
12 |
13 |
14 |
15 |
16 |
______ |
|
`"z"/3` |
`2 2/3` |
3 |
`3 1/3` |
______ |
______ |
______ |
______ |
______ |
______ |
______ |
