Answer:
kyfmjtulk thet ilfyltify ffg i gd gfbki fj fx's yp
-5 is the correct answer
Step-by-step explanation:
question number 2 first part X + 2 is equal to 7 .. x is equal to 7 - 2x is equal to 5 ..second part 3 x minus 1 is equal to 3 x is equal to 23 - 1 = 3x=24 x=24÷3=x=8ans
neon-0
oxide- -2
copper-2
tin-0