if using the order of operations the answer is
80 - (12 x 4) = 80 - 48 = 32
if doing the problem as listed
(80 - 12) x 4 = 68 x 4 = 272
4 x 12 + 4 x 8 = 4 x (12 + 8) = 4 x 20 = 80
80 x 12= 960
84
12=(15/100)x x=[(12)(100)]/15=(20)(4)=80 Now, 35 percent of a number is (35/100)(80)=Y after cancelling, Y=(7)(4)=28 OR (Shorthand Version) 12/.15=80 80(.35)=28
x/80 + 7 = 12 x/80 = 5 x = 80 x 5 = 400
35 inches x 80 inches = 35/12 feet x 80/12 feet =( 35/12) x (80/12) sq ft
12 x 80 = 960
80
80 percent of 12 percent = 0.8 x 12 percent = 9.6 percent
First, change 2x+6y=32 to x+3y=16. Then solve for x, which is x=-3y+16. Then substitute -3y+16 as x into 5x-2y=12 and solve for y. 5(-3y+16)-2y=12 -15y+80-2y=12 -17y+80=12 -17y=-68 y=4 Then substitute 4 as y in either equation to solve for x. 5x-2(4)=12 5x-8=12 5x=20 x=4 The answer is x=4 and y=4, or (4,4)
12 (80 x .15=12)
80 x 1 = 80 80 x 2 = 160 80 x 3 = 240 80 x 4 = 320 80 x 5 = 400 80 x 6 = 480 80 x 7 = 560 80 x 8 = 640 80 x 9 = 720 80 x 10 = 800 80 x 11 = 880 80 x 12 = 960