3 4/7 minus 1/7 is 3 3/7
21/3 * 1/4 = 7/3 * 1/4 = 7/12
(-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
28/9 x 4/7 = 1 and 7/9
That depends on whether you are asking about (4/7)-1 or 4/(7-1) (whether the one is in the denominator or is a separate thing. (4/7)-1 is -3/7 4/(7-1)=4/6=2/3
3 4/7 minus 1/7 is 3 3/7
4/7 + 3/7 = 1
3/4+1/7 = 25/28
21/3 * 1/4 = 7/3 * 1/4 = 7/12
3/7 x -1/4 = -3/28
(-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
The answer is 3 over 7. First you have to set up the equation like how you just did. Then you multiply numerator to numerator and denom. to denom. and you get 12 over 28 which reduces to 3 over 7 when you divide the numerator and denomerator by 4.
28/9 x 4/7 = 1 and 7/9
That depends on whether you are asking about (4/7)-1 or 4/(7-1) (whether the one is in the denominator or is a separate thing. (4/7)-1 is -3/7 4/(7-1)=4/6=2/3
1/3 + 1/4 = 7/12
-3/4 + -7/12 = (-3×3)/(4×3) + -7/12 = -9/12 + -7/12 = (-9 + -7)/12 = -16/12 = (-4×4)/(3×4) = -4/3 = -1 1/3.
4/7 x 3/3 = 4x3/7x3 = 4/7 Alternatively, you may realise that 3/3 = 3 ÷ 3 = 1 → 4/7 x 3/3 = 4/7 x 1 = 4/7