Advertisements
Advertisements
प्रश्न
Simplify:
2a − 3b − [3a − 2b − {a − c − (a − 2b)}]
उत्तर
2a − 3b − [3a − 2b − {a − c − (a − 2b)}]
We will first remove the innermost grouping symbol ( ), followed by { } and then [ ].
∴ 2a − 3b − [3a − 2b − {a − c − (a − 2b)}]
= 2a − 3b − [3a − 2b − {a − c − a + 2b}]
= 2a − 3b − [3a − 2b − {− c + 2b}]
= 2a − 3b − [3a − 2b + c − 2b]
= 2a − 3b − [3a − 4b + c ]
= 2a − 3b − 3a + 4b − c
= − a + b − c
APPEARS IN
संबंधित प्रश्न
Complete the last column of the table.
Equation | Value | Say, whether the Equation is Satisfied. (Yes/No) |
x + 3 = 0 | x = -3 |
Check whether the value given in the bracket is a solution to the given equation or not:
7n + 5 = 19 (n = 2)
Set up an equation in the following case:
In an isosceles triangle, the vertex angle is twice either base angle. (Let the base angle be b in degrees. Remember that the sum of angles of a triangle is 180 degrees.)
Different mathematical operations are given in the two rows below. Find out the number you get in each operation and make equations.
16 ÷ 2; 5 × 2; 9 + 4; 72 ÷ 3; 4 + 5; 8 × 3; 19 - 10; 10 - 2; 37 - 27; 6 + 7
Simplify:
−4x2 + {(2x2 − 3) − (4 − 3x2)}
Write the following statement as an equation:
A number increased by 8 equals 15.
Solve the following equation and verify the answer:
6x + 5 = 2x + 17
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?
Write 'T' for true and 'F' for false for the statement given below:
8 − x = 5 ⇒ x = 3.
Solve the following riddles, you may yourself construct such riddles.
Who am I? |
![]() |
I am a special number Take away from me a six! A whole cricket team You will still be able to fix! |