Advertisements
Advertisements
प्रश्न
Solve the following equation and verify the answer:
3x − 5 = 13
उत्तर
3x − 5 = 13
⇒ 3x − 5 + 5 = 13 + 5 [Adding 5 on both the sides]
⇒ 3x = 18
⇒ `(3x)/3` =`18/3` [Dividing both the sides by 3]
⇒ x = 6
Verification:
Substituting x = 6 in the L.H.S.:
⇒ 3 ×× 6 − 5 = 18 − 5 = 13 = R.H.S.
L.H.S. = R.H.S.
Hence, verified.
APPEARS IN
संबंधित प्रश्न
Complete the last column of the table.
| Equation | Value | Say, whether the Equation is Satisfied. (Yes/No) |
| `m/3 = 2` | m = 0 |
Write equation for the following statement:
Seven times m plus 7 gets you 77.
Write the given equation in statement form:
`p/2` + 2 = 8
Set up an equation in the following case:
Laxmi’s father is 49 years old. He is 4 years older than three times Laxmi’s age. (Take Laxmi’s age to be y years.)
Simplify:
a − (b − 2a)
Verify by substitution that the root of 8 − 7y = 1 is y = 1
A shopkeeper sells mangoes in two types of boxes, one small and one large. A large box contains as many as 8 small boxes plus 4 loose mangoes. Set up an equation which gives the number of mangoes in each small box. The number of mangoes in a large box is given to be 100.
I think of a number and on adding 13 to it, I get 27. The equation for this 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.
2n + 1 = 11
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.
r − 4 = 0 (4, − 4, 8, 0)
