Question

please answer these qiestion correctly I will follow u and give votes it's important ​

Answer 1

$1) \underline{Find \ the \ product \ of \ -2 \frac{3}{4} \ and \ 5\frac{6}{7} }\\\\ =>-2 \frac{3}{4} = \frac{-11}{4}\\\\=>5\frac{6}{7} = \frac{41}{7} \\\\ => \frac{-11}{4} \times \frac{41}{7} =\frac{-454}{28}$

$2) {\frac{-3}{5} +\frac{2}{5} =\frac{-3+2}{5} =\frac{-1}{5}$

$3) \underline{Find \ the \ sum \ of \ \frac{8}{13} \ and \ \frac{3}{11}:}\\\\ => \frac{8}{13} +\frac{3}{11} \\\\ => \frac{8}{13}\times \frac{11}{11} +\frac{3}{11}\times\frac{13}{13} \\\\ => \frac{88}{143}+\frac{39}{143} \\\\ => \frac{88+39}{143} \\\\ =>\frac{127}{143}$

$4) \underline{simplify:\frac{3}{7} \div (\frac{21}{-55}) } \\\\ => \frac{3}{7} \div (\frac{21}{-55}) \\\\ => \frac{3}{7} \times (\frac{-55}{21}) \\\\ =>\frac{-55}{49}$

$5) \underline{Which \ is \ greater : \frac{4}{3} \ or \ \frac{7}{8}? }\\\\ make \ the \ denominators \ equal,\\\\ => \frac{4}{3} = \frac{4}{3} \times \frac{8}{8} =\frac{32}{24} \\\\ => \frac{7}{8} = \frac{7}{8} \times \frac{3}{3} =\frac{21}{24} \\\\ compare \ the \ numerators, \\ 32>21 \\\\ \implies \frac{4}{3} \ is \ greater.$

$6)\underline{If \ \frac{-5}{7} =\frac{x}{28},find \ the \ value \ of \ x? }\\\\=>\frac{-5}{7} =\frac{x}{28} \\\\ =>\frac{-5}{7} \times 28=x \\\\ => x=-5 \times4 \\\\ =>x=-20$

hope it helps..!

Answer 2

Answer:

1. 2 4/28

2. -1/5

3. 127/143

4. 63/385

5. 7/8

6. x = 20

Step-by-step explanation:

1. -15/4  +  41/7

   -105+164/28

   59/28

   we have to change it into mixed fraction

     2 4/28

2.-3+2/5 = -1/5

3.88+39/143

  127/143

4. 3/7 into -55/21 (cross multiplication)

  63/385

5.7/8

6. 4 intro 7 is 28 so x will be equal to 20