2+12a. When adding, you're only collecting "like terms".
Answer:
i think its -2 or 6 or -6.75, depending on how you phrase it. just use the formula below :) sorry im not much help
Step-by-step explanation:
-5-3/4-1
m=x2-x1/y2-y1
Her brother is 9.
Because she is 3 years older than half his age, subtract 3 - 21. This gives 18. Then divide 18 / 2. This gives 9.
Answer:86
Step-by-step explanation:
You would do multiplication first so 18x2 = 36 then you would add 36+50 which equals 86