Advertisements
Advertisements
प्रश्न
Add 7xyz, − 5xyz, 9xyz, −8xyz
उत्तर
Required sum = 7xyz + (− 5xyz) + 9xyz + (−8xyz)
= (7-5+9-8)xyz = 3xyz
APPEARS IN
संबंधित प्रश्न
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.)
Add the following:
\[2 x^2 - 3xy + y^2 \]
\[ - 7 x^2 - 5xy - 2 y^2 \]
4 x2 + xy - 6 y2
_______________
Simplify:
3 − [x − {2y − (5x + y − 3) + 2x2} − (x2 − 3y)]
Write the following statement as an equation:
Twice a number subtracted from 19 is 11.
Write a statement for the equation, given below:
12y − 30 = 6
Solve the following equation by the trial-and-error method: `1/2x+7=11`
Solve the following equation and verify the answer:
6(1 − 4x) + 7(2 + 5x) = 53
The sum of three consecutive natural numbers is 51. Find the numbers.
The sum of three consecutive odd numbers is 75. Which is the largest among them?
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 = (11 × 2) + p
