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प्रश्न
When a number is divided by 8, the result is –3. The number is ______.
उत्तर
When a number is divided by 8, the result is –3. The number is –24.
Explanation:
Let the number be x.
According to the question,
`x/8 = - 3`
⇒ x = 8 × (–3) ...[By cross-multiplication]
⇒ x = –24
Hence, the required number is –24.
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संबंधित प्रश्न
Complete the last column of the table.
| Equation | Value | Say, whether the Equation is Satisfied. (Yes/No) |
| x + 3 = 0 | x = 3 |
Simplify:
a − [2b − {3a − (2b − 3c)}]
Simplify:
12x − [3x3 + 5x2 − {7x2 − (4 − 3x − x3) + 6x3} − 3x]
Solve the following equation by the trial-and-error method: y + 9 = 13
Solve the following equation by the trial-and-error method: `1/2x+7=11`
The coefficient of x in −5xyz 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.
x − 2 = 0
State which of the following are equations (with a variable). Give reason for your answer. Identify the variable from the equations with a variable.
`(3"q")/2 < 5`
Complete the entries in the third column of the table.
|
S.No. |
Equation |
Value of variable |
Equation satisfied Yes/No |
|
(a) |
10y = 80 |
y = 10 |
______ |
|
(b) |
10y = 80 |
y = 8 |
______ |
|
(c) |
10y = 80 |
y = 5 |
______ |
|
(d) |
4l = 20 |
l = 20 |
______ |
|
(e) |
4l = 20 |
l = 80 |
______ |
|
(f) |
4l = 20 |
l = 5 |
______ |
|
(g) |
b + 5 = 9 |
b = 5 |
______ |
|
(h) |
b + 5 = 9 |
b = 9 |
______ |
|
(i) |
b + 5 = 9 |
b = 4 |
______ |
|
(j) |
h − 8 = 5 |
h = 13 |
______ |
|
(k) |
h − 8 = 5 |
h = 8 |
______ |
|
(l) |
h − 8 = 5 |
h = 0 |
______ |
|
(m) |
p + 3 = 1 |
p = 3 |
______ |
|
(n) |
p + 3 = 1 |
p = 1 |
______ |
|
(o) |
p + 3 = 1 |
p = 0 |
______ |
|
(p) |
p + 3 = 1 |
p = − 1 |
______ |
|
(q) |
p + 3 = 1 |
p = − 2 |
______ |
Pick out the solution from the values given in the bracket next to each equation. Show that the other values do not satisfy the equation.
5m = 60 (10, 5, 12, 15)
