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प्रश्न
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 |
______ |
उत्तर
- 10y = 80
y = 10 is not a solution to the given equation because for y = 10,
10y = 10 × 10 = 100 and not 80 - 10y = 80
y = 8 is a solution to the given equation because for y = 8,
10y = 10 × 8 = 80 and hence, the equation is satisfied. - 10y = 80
y = 5 is not a solution to the given equation because for y = 5,
10y = 10 × 5 = 50 and not 80 - 4l = 20
l = 20 is not a solution to the given equation because for l = 20,
4l = 4 × 20 = 80 and not 20 - 4l = 20
l = 80 is not a solution to the given equation because for l = 80,
4l = 4 × 80 = 320 and not 20 - 4l = 20
l = 5 is a solution to the given equation because for l = 5,
4l = 4 × 5 = 20 and hence, the equation is satisfied. - b + 5 = 9
b = 5 is not a solution to the given equation because for b = 5,
b + 5 = 5 + 5 = 10 and not 9 - b + 5 = 9
b = 9 is not a solution to the given equation because for b = 9,
b + 5 = 9 + 5 = 14 and not 9 - b + 5 = 9
b = 4 is a solution to the given equation because for b = 4,
b + 5 = 4 + 5 = 9 and hence, the equation is satisfied. - h − 8 = 5
h = 13 is a solution to the given equation because for h = 13,
h − 8 = 13 − 8 = 5 and hence, the equation is satisfied. - h − 8 = 5
h = 8 is not a solution to the given equation because for h = 8,
h − 8 = 8 − 8 = 0 and not 5 - h − 8 = 5
h = 0 is not a solution to the given equation because for h = 0,
h − 8 = 0 − 8 = −8 and not 5 - p + 3 = 1
p = 3 is not a solution to the given equation because for p = 3,
p + 3 = 3 + 3 = 6 and not 1 - p + 3 = 1
p = 1 is not a solution to the given equation because for p = 1,
p + 3 = 1 + 3 = 4 and not 1 - p + 3 = 1
p = 0 is not a solution to the given equation because for p = 0,
p + 3 = 0 + 3 = 3 and not 1 - p + 3 = 1
p = −1 is not a solution to the given equation because for p = −1,
p + 3 = −1 + 3 = 2 and not 1 - p + 3 = 1
p = −2 is a solution to the given equation because for p = −2,
p + 3 = − 2 + 3 = 1 and hence, the equation is satisfied.
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