EXERCISE 7B
1. Twice a number when decreased by 7 gives 45. Find the number.
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Answer:
Step-by-step explanation: GOD NO
Answered by
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Step-by-step explanation:
Let the no be x
so, twice a no= 2x, when decrease by 7= 2x-7 ,gives 45
Therefore= 2x-7=45
=2x= 45=7 9 by transposition)
=2x= 38
=x=38/2
=x= 19
The no is 19
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