Is this what you mean this is what i understood.
X-4=10;4x+1=57
First equation solve for x.
X-4=10
Add 4 both sides
X=10+4
X=14
Second equation substitute your x answer into second equation to make both sides equal.
4x+1=57
4(14)+1=57
56+1=57
57=57
Answer:
all done bud, I'm just here for the extra points :D
P+2-4=14
p-2=14
add 2
p+2-2=14+2
p+0=16
p=16
Next 6 terms =81 ,243,729,2187,6561,19683