Q. What value of u is a solution to this equation?u+20=30Choices:(A)u=10(B)u=12
Subtract to isolate u: To find the value of u that solves the equation, we need to isolate u on one side of the equation. We can do this by subtracting 20 from both sides of the equation.u+20−20=30−20
Calculate u: After performing the subtraction, we get the value of u.u=10
Check answer choices: Now we need to check the answer choices to see which one matches our solution.(A) u=10 is the correct answer because it matches the solution we found.(B) u=12 does not match our solution.