7*2+5=19
Check the order of operation.
7 + 5 + 4 ÷ 2 + 7 = 21
18(7) + 5 = 131
-12
It doesn't ! -7 plus -5 equals -12 ! -7 plus 5 equals -2
72 is.
It is 5*7*4 = 140
5 + 2 + 3 + 7 + (21/7) = 20
5 plus the product of 7 and n.
2+5=7 5+2=7 2+5=5+2
2+5 = 7 7 + 125 = 132.
7 plus neagtive 5 = 2
5+2=7