Determine the numerical value of the triangle:
If
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Determine the numerical value of the triangle:
If
To solve this problem, we'll follow these steps:
Now, let's work through each step:
Step 1: Set up the equation:
We start with the equation .
Step 2: Isolate the triangle symbol:
To find , we subtract from both sides of the equation:
Step 3: Calculate the numerical value of the triangle:
Performing the subtraction gives us:
Therefore, the solution to the problem is .
If we have 67 blocks in total, how many blocks will remain if we remove 5 tens and 4 ones?
Because 8 is being added to the triangle, you need to do the opposite operation (subtraction) to cancel it out. Think of it as undoing what's already there!
The process is exactly the same! Whether it's or , you still subtract 8 from both sides to isolate the triangle.
Look at what operation is being done to your variable. If something is being added to it, subtract that number. If something is being subtracted from it, add that number back.
While guessing might work for simple problems, learning the algebraic method is much more reliable and efficient, especially for harder equations you'll encounter later!
The triangle is just a placeholder for an unknown number, like using x or any other letter. It represents the value we need to find.
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