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juin [17]
3 years ago
12

How do you solve this step by step? “ I’m thinking of a number. If you multiply it by 6 and then add 7, you will get 55. What is

my number?”
Mathematics
2 answers:
Julli [10]3 years ago
7 0

Answer:

\large \boxed{8}

Step-by-step explanation:

        Let x = your number

   Then 6x = your number multiplied by 6

and 6x + 7 = 7 added to that number

\begin{array}{rcrl}6x + 7 & = & 55 & \\6x & = & 48 & \text{Subtracted 7 from each side}\\x & = & \mathbf{8} & \text{Divided each side by 6}\\\end{array}\\\text{Your number is $\large \boxed{\mathbf{8}}$}

Check:

\begin{array}{rcl}6(8) + 7 & = & 55\\48 + 7 & = & 55\\55 & = & 55\\\end{array}

OK.

lozanna [386]3 years ago
5 0

Answer:

8

Step-by-step explanation:

55 -7 = 48

48/6= 8

Check answer:

8x6= 48

48+7= 55

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If you want to learn more about quadratic equations:

brainly.com/question/1214333

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2 years ago
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2 years ago
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8 0
3 years ago
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Step-by-step explanation:


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