Easy, 12-8=4+3=7+5=12 So, he had 12 books before last week
Answer:
Step-by-step explanation:
A) 2x*2 +6x -3x - 9= 2x*2 +3x -9
B) 2yx*2 +2yx +2y +3x*2 +3x +3
C) 36x*2 y +48yx +3xy*2 + 4y*2
D) 2x*3 - 4x*2 y + 3x -6y
Answer:The value of x is 6.4
5/8=4/x use cross product.
5x=32 divide both sides by 5
x = 6.4