BlackOut Math - 4

B

benow5667

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Dec 22, 2020
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For this problem take out two numbers or signs to make the equation correct

(2+7)*5=6*4+18-5
 
If you do not define what you consider is a number no one will be able to help you as no one understands the problem.
 
benow5667 said:
For this problem take out two numbers or signs to make the equation correct

(2+7)*5=6*4+18-5
Click to expand...
Please show us what you have tried and exactly where you are stuck.

Please follow the rules of posting in this forum, as enunciated at:


Please share your work/thoughts about this problem.
 
benow5667 said:
… take out two numbers or signs to make the equation [true]

(2 + 7)*5 = 6 * 4 + 18 - 5
Click to expand...
Hi benow. I've treated the Whole numbers shown (not individual digits) as "numbers" and all remaining symbols as "signs".

We solve these types of exercises mostly by trial-and-error. I began by evaluating each side, and then I started experimenting. That is, I tried removing pairs (i.e., two numbers OR two signs OR one number/sign pair), until I saw a true equation.

Don't remove the equals sign.

No, seriously, here's the hint: Work with only one side. That is, try removing two items from the same side, instead of removing one item from each side.

?
 
Make both changes on the left.

Now that we know what the problem really means, that any two single symbols can be removed, a good strategy is to try making both changes on the left, or both on the right, and then try one on each side.
 
I misspoke earlier, when I implied that we could remove two numbers.

We can't do that, with this equation. If we remove a number, then we need to remove a sign as well.

?
 
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