What is the solution ?
2 answers:
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Let's assume that number as x
The product of 7 and a number =7x
and then increased by 1
so, it will become
=7x+1
now, it is between 15 and 43
so, we can write as
now, we can solve for x
Since, we have to isolate x
step-1:
Subtract all the sides by 1
step-2:
Divide all the sides by 7
so, solution is
.............Answer