Question

1. Compare as fraçoes a seguir:

a) 3/5 e 4/9

b) 7/8 e 5/12 2.

Compare as frações a seguir:

a) 4/5 e 2/3

b) 5/7 e 3/5

c) 2/3, 3/5, 5/7

ajudaa!​​

Answer 1

1. Compare as frações a seguir:

• a) 3/5 > 4/9
• b) 7/8 > 5/12

2. Compare as frações a seguir:

• aí) 4/5 > 2/3
• b) 5/7 > 3/5
• c) 2/3 > 3/5 < 5/7

$\Large{\sf{\Huge ————————————————}}$

Comparação é dizer qual fração é maior. Quando denominadores forem diferentes, igualamos igual a soma de frações.

MMC (5, 9) = 45

$\sf \large \red{ \frac{3}{5}} \green{ \: e \:} \blue{ \frac{4}{9} } \pink{ = } \purple{\frac{9 \times 3}{45 \div 5} } \orange{ \: e\: } \red{ \frac{5\times 4}{45 \div 9} } \\ \large \sf \green{ \frac{27}{45} } \blue{\:e\: } \pink{ \frac{20}{45} } \\ \large \sf \boxed{\sf \purple{ \frac{27}{45} } \orange{ > } \red{ \frac{20}{45}}}$

$\:$

MMC (8, 12) = 24

$\sf \large \red{ \frac{7}{8} } \green{\:e\: } \blue{ \frac{5}{12} } \pink{ = } \purple{ \frac{3 \times 7}{24\div 8} } \orange{ \: e\: } \red{\frac{2 \times 5}{24 \div 12} } \\ \large \sf \green{\frac{21}{24} } \blue{ \: e\: } \pink{ \frac{10}{24} } \\ \large \sf \boxed {\sf \purple{ \frac{21}{24} } \orange{> } \red{ \frac{10}{24}} }$

$\:$

$\:$

2....

MMC (5, 3) = 15

$\sf \large \red{ \frac{4}{5} } \green{\:e\: } \blue{ \frac{2}{3} } \pink{ = } \purple{\frac{3\times 4}{15 \div 5} } \orange{ \: e \: } \red{ \frac{5 \times 2}{15\div 3} }\\ \sf \large \green{ \frac{12}{15} } \blue{ \:e\: } \pink{ \frac{10}{15} } \\ \large \sf \boxed{ \sf \purple{ \frac{12}{15} } \orange{ > } \red{\frac{10}{15}} }$

$\:$

MMC (7, 5) = 35

$\sf \large \red{ \frac{5}{7} } \green{ \:e\: } \blue{ \frac{3}{5} } \pink{ = } \purple{\frac{5 \times 5}{28 \div 7} } \orange{ \:e\: } \red{ \frac{7\times 3}{28 \div 5} }\\ \large \sf \green{ \frac{25}{28} } \blue{\:e\: } \pink{ \frac{21}{28} }\\ \large \sf \boxed{\sf \purple{ \frac{25}{28} } \orange{> } \red{ \frac{21}{28}} }$

$\:$

MMC (3, 5, 7) = 105

$\sf \large \red{ \frac{2}{3} } \green{ \: e\: } \blue{ \frac{3}{5} } \pink{ \:e\: } \purple{\frac{5}{7} } \orange{ = } \red{\frac{35 \times 2}{105 \div 3} } \green{\:e\: } \blue{ \frac{21 \times 3}{105\div 5} } \pink{ \:e\: } \purple{ \frac{15 \times 5}{105\div 7} } \\ \large \sf \orange{ \frac{70}{105} } \red{ \:e\: } \green{\frac{63}{105} } \blue{ \: e\: } \pink{ \frac{75}{105} } \\ \large \sf \boxed{\sf \purple{ \frac{70}{105} } \orange{> } \red{\frac{63}{105} } \green{ < } \blue{ \frac{75}{105}} }$