Adding zero would do nothing to it.
D is your answer.
Hope this helps!
STSN
81 times a number minus 77 is equal to -77 less than the number 81x-77=x-77
the lower the valance electrons the more reactive the element.
Since Element B has few electrons it is more reactive
so the answer is Element A is less reactive but will still react
Answer: if solving for x....
x= 6
Step-by-step explanation:
2x-5=7
2x-5+5=7+5
2x-5+5=7+5
2x/2= 12/2
x= 6
