Answer:
u = 55
Step-by-step explanation:
1. Understand that this is in algebraic equation, and the variable (a symbolic letter) represents a number. U in this equation represents a number.
2. Add 26 and 29 like a normal pre-algebra equation.
a - 3 = 6 is an example. To find a, you would add 3 and 6 and find a = 9. Now you just have to do that with bigger numbers.
3. You would find that 26+29 is equal to 55, meaning U is 55.
4. Check your answer! 55-26=29.
Hope this helps, Khan Academy has some awesome videos on this too. xx
