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
Check whether the value given in the bracket is a solution to the given equation or not:
7n + 5 = 19 (n = 2)
Solve the following equation by trial and error method:
5p + 2 = 17
Write equation for the following statement:
Seven times m plus 7 gets you 77.
Simplify:
a − [2b − {3a − (2b − 3c)}]
Write a statement for the equation, given below:
2y = 18
Solve the following equation and verify the answer:
`x/4-8=1`
The cost of 1 pen is Rs 16 and the cost of 1 pencil is Rs 5. What is the total cost of x pens and y pencils?
The coefficient of x in −5xyz is
Given Munnu’s age to be x years, can you guess what (x − 2) may show?
(Hint: Think of Mannu’s younger brother.)
Can you guess what (x + 4) may show? What (3x + 7) may show?
State which of the following are equations (with a variable). Give reason for your answer. Identify the variable from the equations with a variable.
7 × 3 − 13 = 8
