If
Solve the following addition problem:
We have hundreds of course questions with personalized recommendations + Account 100% premium
If
Solve the following addition problem:
To solve this problem, we'll follow these steps:
Now, let's work through each step:
Step 1: Identify from the problem statement.
Step 2: Substitute the value 7 for in , so we have .
Step 3: Add 7 and 21 to get 28.
Therefore, the solution to the problem is .
Add fifty units to the number 31.
What is the resulting number?
The circle symbol is just a placeholder for a number! In this problem, it represents the number 7. Think of it like a mystery box that contains the value 7.
Because the circle doesn't equal 21 - it equals 7! You must substitute the correct value. Always read what the symbol equals first.
Look at the equation carefully: . The circle comes first, so substitute 7 in the first position: 7 + 21, not 21 + 7 (though addition gives the same result).
The process stays the same! If , then . Always substitute first, then calculate.
Not quite! Here, we're told what equals (7), so we just substitute and calculate. Solving for x means finding an unknown value through algebraic steps.
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