7 multiplied by 80 equals 560.
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80 x 7/10 = 56 One tenth of 80 is 8. Seven tenths of 80 is 56.
7/8 x 80 = 70
70 / 80 To go from 7 / 8 to x / 80, you would multiply the numerator and the denominator by 10. You can also find this using cross multiplication. 7 / 8 and x / 80 8x = 560 x = 560 / 8 x = 70
if you meant "x²+7x-80=0"solution1 x≈6solution2 x≈-13if you meant "x²*7x-80=0"x≈2if you meant "x*2*7*x-80=0"solution1 x≈2solution2 x≈-2if you meant "x²+7x-80"unable to find x or simplifyif you meant exactly like you wrote "x*2*7*x-80"then it could be simplified to 14x²-80 but I don't see how to solve this by graphing.
4 x 20 = 80 4 x 7 = 28 80 + 28 = 108 4 x 27 = 108