L: 1750, M:1750-480=1270
Lisa gave some stamps to Mark so Lisa now has 1750-x and Mark has 1270+x. Mark also has 3 times as many as Lisa now: (1750-x)*3=1270+x
5250-3*x=1270+x
4*x=3980, x=3980/4, x=995
So Lisa gave 995 stamps to Mark.
At first Mark had 1270 stamps. Lisa now has 1750-995=755 stamps.
(x+1)-5(x+1+3)
(x+1)-5(x+4)
x + 1 - 5x - 20
-4x - 19
34? Or 32? I’m not sure cause it’s a 2 step problem and math isn’t the best thing I’m good at
Step one because they didn’t subtract 5 from the value -5/2.
Just divide 5 by 37 and you get: .1351 or .14 rounded up.
