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3n + 7 = 163n + 7 - 7 = 16 - 73n + 7 - 7 = 16 - 73n = 16 - 73n = 93n/3 = 9/33n/3 = 9/3n = 9/3n = 3Check:3 x 3 + 7 =? 169 + 7 =? 1616 =? 16n=3 is the correct answer.
To compare fractions. Bring both fractions to a common denominator, and equivalent numerators. Hence 7/16 : 3/7 The common denominator is 16 x 7 = 112 Hence 7(7)/112 & 3(16) /112 49/112 & 48/112 Compare the numerators 49 > 48 ( by '1'). Hence Hence it follows that 7/16 > 3/7
There is an interval of 3 between the numbers 1+3=4 4+3=7 7+3=10 10+3=13 13+3=16 16+3=19 19+3=22 22+3=25
5/16 + 7/16 = 192/256 or 3/4
(-3/4)*(-1/3) + (7/8)*(-1/2) = (3/4)*(1/3) - (7/8)*(1/2) = 1/4 - 7/16 = 4/16 - 7/16 = -3/16