ok
20-8-2-5
it can be 5, 20-8=12,12-2=10,10-5=5
or
20(-8)-2(-5)
-160(-2)
320(-5)
-1600
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6x-8+2x-5 = 7-2x 6x+2x+2x = 7+8+5 10x = 20 x = 20/10 x = 2
1 x 40, 2 x 20, 4 x 10, 5 x 8, 8 x 5, 10 x 4, 20 x 2, 40 x 1
x*-4=8+(2-5*x) =-4x=8+2-x5 x*-4=8+(2-5*x) =-4x=8+2-x5 x*-4=8+(2-5*x) =-4x=8+2-x5
The answer is 8. One fifth of 20 is 4 because 20/5 is 4, and 4*2=8
1/2*base*height = area 1/2*8*5 = 20 square units