Determine the numerical value of the triangle:
We have hundreds of course questions with personalized recommendations + Account 100% premium
Determine the numerical value of the triangle:
To solve the equation , we will use basic algebra to isolate the value of .
We start by adding 3 to both sides of the equation to isolate :
Notice that on the left side simplifies to 0, which leaves us with:
Now, perform the arithmetic on the right side:
Hence, the numerical value of the triangle is .
If we have 85 blocks in total, how many blocks will remain if we remove 4 tens and 1 one?
The triangle is just a variable like x or y! It represents an unknown number we need to find. Think of it as a placeholder for the mystery value.
Look at what's happening to the variable! Since we have , we need to undo the subtraction by adding 3 to both sides. Always do the opposite operation.
Try replacing the triangle with x in your head! The equation becomes , which might feel more familiar. The solving steps are exactly the same.
Yes! Think logically: "What number minus 3 equals 70?" You can count up from 70: . This mental math confirms your algebraic solution!
Not always! You do whatever opposite operation is needed. If the equation was , you'd subtract 3 from both sides instead.
Get unlimited access to all 18 Natural Numbers around 100 questions, detailed video solutions, and personalized progress tracking.
Unlimited Video Solutions
Step-by-step explanations for every problem
Progress Analytics
Track your mastery across all topics
Ad-Free Learning
Focus on math without distractions
No credit card required • Cancel anytime