I think it’s 5 but don’t get mad if it’s wrong
Answer: 492016
Step-by-step explanation:
88+8698= 8786
8786×56= 492016
A number is :

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Three quarters of it means :

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Decrease by 20 means :

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Equals to 82 means :

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What is that number ?
x asked so we must solve the above equation for x.
Let's do it....

Plus sides 20


Multiply sides by 4

Divided sides by 3


Simplify


So that number is 136 .
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And we're done.
Thanks for watching buddy good luck.
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It is 4x4 then divide that by 2 since a triangle is half of a square so 16 divided by 2 which is 8
X² = 1/4 ⇒√⇒ x₁ = 1/2, x₂ = -1/2