x+ x/2 =45
trial and error method
class 7 th
Answers
Answered by
2
Answer:
x = 30
Its not an trial and error question
Its an equation
It is 3x/2 = 45
3x = 90
So , x = 30
Step-by-step explanation:
Answered by
0
Given:
x + x/2 = 45.
To Find:
The value of x.
Solution:
x + x/2 = 45.
(2x + x) / 2 = 45.
3x / 2 = 45.
3x = 45*2.
3x = 90.
x = 90/3.
x = 30.
Putting the value of x in the given equation,
x + x/2 = 45.
30 + 30/2 = 45.
(30*2 + 30) / 2 = 45.
(60 + 30) / 2 = 45.
90/2 = 45.
45 = 45.
L.H.S. = R.H.S.
Hence, the value of x is 30.
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