instead of P+2x = y it should be P-2x=y
so then it is P-2x/2 =y
6x-1=4x+6
subtracting 4x from each side
2x-1=6
adding 1 to each side
2x=7
divide by 2
x=7/2 or 3.5
check: 6(7/2) -1 =4(7/2)+6
21-1 =14+6
20=20 correct
100 minus 72 equals to 28. 28% of NOT getting an exam next week
The second one 2(2x) +2(4x+3)