Question

if a number is multiplied by 7 and decreased by 1 ,the result is 20 find the number​

Answer 1

Answer:

3

Step-by-step explanation:

=20+1 = 21

=21 /7 = 3

Answer 2

Answer:

$let \: the \: number \: be \: x \\(7x - 1) equals \: to \: 20 \\ 7x \: equals \: to \: 20 + 1 \\ 7x \: equals \: to \: 21 \\ x \: equals \: to \: 21 \div 7 \\ | which \: \: is \: \: equal \: to \: 3$

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