Question

Qno1)Divide 75 by 1000.
Qno2)Add using column method 2x - 8x2-9; 5x2+ 3x+ 4.
Qno3)solve and check your answer. 7x -3x+8= x+2.
Qno4) Ruchi is 4 years older than Monica , and the sum of their ages is 20 years. Find their ages
Qno5) subtract 15x2 from 17x2.​

Answer 1

Answer:

1. 0.075

3. 7x-3x+8=x+2

4x+8=x+2

4x-x=2-8

3x= -6

×= -2

for checking put the value of x in equation

4. let age of Monica is x

So age of Ruchi is x+4

ATQ

x+x+4=20

2x+4=20

2x=20-4

2x=16

x=8

Age of Monica is 8

and Age of Ruchi is 12

5. (17×2)-(15×2)

2(17-15)

2(2)

4

Hope it will help you..