Question

please answer this

1. Solve the following equations.
a) − = c) + = e) ( − ) + =
b)

+ = d) − = − f) = ( + )
2. Frame equations and solve the following.
a) The sum of a number and 7 is equal to 15.
b) A number increased by 28 is 38.
c) 20 less than a number is 66.
d) 6 times a number added to 10 is 58.
e) The product of 7 and a number is 56.
3. I am thinking of a number. If 60 is subtracted from it the result is 4.
Find the number.
4. Sandeep has twice as many rupees as Sonia. Together they have
Rs.150. How many rupees does Sonia have?
5. If one side of a square is represented by − and the adjacent side
is represented by + , find the value of x.

Answer 1

2)a) x + 7 = 15
       x = 15 - 7
       x =8

b) x + 28 =38
x = 38 - 28
x = 10

c)x - 20 = 66
x = 66 + 20
x = 86

d)6x + 10 = 58
6x = 58 - 10
6x = 48
x = 48/6
x = 8

e)7 * x = 56
x = 56/7
x = 8

3) let the no. be x
x - 60 = 4
x= 4 + 60
x = 64

4) let sonia's money be x
then snadeep's money will be 2x
therefore, 2x + x = 150
3x = 150
x = 150/3
x = 50

i didn.t understood the 1) equations

Answer 2

plzz.... aa jaona wapas ankita