Final Answer:
The value of u in the given expression is 10.
Step-by-step explanation:
To solve the equation u - 7 = 3, follow these steps:
1. Start with the original equation: u - 7 = 3
2. The goal is to isolate the variable u on one side of the equation so that we can find its value.
To do this, we need to get rid of the -7 that is subtracted from u. We can do this by adding 7 to both sides of the equation.
3. Add 7 to both sides: u - 7 + 7 = 3 + 7
4. Simplify both sides of the equation:
On the left side, -7 and +7 cancel each other out, leaving us with u alone.
On the right side, 3 + 7 equals 10.
5. Write down the simplified equation: u = 10
6. We have now isolated u and found its value: u = 10
So, the solution to the equation u - 7 = 3 is u = 10.
Complete question:
Solve one step addition and subtraction equals with whole numbers:
Solve for u.
u − 7 = 3