Answer:
Hello!
To solve for x, you need to follow SADMEP. SADMEP is subtraction, addition, division, multiplication, exponents, and parentheses. It follows the same rules as PEMDAS, but SADMEP is only used when solving algebraic equations.
x - 5 = 0.1(x + 5) (use the distributive property)
x - 5 = 0.1x + 0.5 (subtract 0.1x to both sides)
0.9x - 5 = 0.5 (add 5 to both sides)
0.9x = 5.5 (divide both sides by 0.9)
x = 6.1111... | This can be rounded to 6.11 km/hour.
Therefore, Kelli can swim about 6.11 kilometers per hour.
Hope this helps :D
Mark me brainliest if its good, i know its right though (:
