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Original poster

Maths question

7 replies

Serena1977 · 20/03/2024 21:44

Could I have some help with this maths question please?

I think of a number. I multiply this number by 8, then subtract 66. The result is twice the number that I was thinking of.
What is the number I was thinking of?

I know what the answer is but only through trial and error trying different numbers which took a little time. What is the faster route please?

OP posts:
NeedySnail · 20/03/2024 21:48

X is the number you are thinking of, so

8x - 66 = 2x
6x = 66
x = 11

Ponderingwindow · 20/03/2024 21:49

8x-66=2x

NorthernGirlie · 20/03/2024 21:50

.

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cakeorwine · 20/03/2024 21:59

Algebra.

Always the best way

alwaysatthebusstop · 20/03/2024 22:01

NeedySnail · 20/03/2024 21:48

X is the number you are thinking of, so

8x - 66 = 2x
6x = 66
x = 11

It's always so easy when you see the answer 😂

KCSIE · 20/03/2024 22:03

NeedySnail · 20/03/2024 21:48

X is the number you are thinking of, so

8x - 66 = 2x
6x = 66
x = 11

Exactly this.

Algebra and rearranging the equation to find the missing number x.

PlipPlopChoo · 20/03/2024 22:15

I know. The answer is baked beans.

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