algebra
x-10=8
x=18
area of a triangle with b=2 and h=3
area= 3
1/2 +1/2
1
12-x=9
x=3
area of a triangle with b=10 and h=5
area=25
3/4 multiplied by 2/3
1/2
7y-y
6y
area of a triangle with b=5 and h=12
area=30
1/3 divided by 5/3
1/5
8x-5x
3x
area of a rectangle with l=2 and w=2
A=4
4/5+3/15
1
50=25x
x=2
area of a rectangle with l=5 and w=10
A=50
5/6-2/3
1/6