Question

ESTA TUDO NA FOTO. SE NAO SABE NAO RESPONDE MEU IRMAO QUE PEDIU PRA PERGUNTAR​

Answer 1

Resposta:

a) 2

b) 3

c) 7/6

d) 5/6

e) 3/4

f) 7/12

g) 1/12

h) 1/15

i) 13/7

j) 13/72

k) 7/2

Explicação passo-a-passo:

a) $\frac{1}{2}+\frac{3}{2}=\frac{1+3}{2}=\frac{4}{2}=2$

b) $\frac{4}{3}+\frac{5}{3}=\frac{4+5}{3}=\frac{9}{3}=3$

c) $\frac{5}{6}+\frac{2}{6}=\frac{5+2}{6}=\frac{7}{6}$

d) $\frac{1}{2}+\frac{1}{3}=\frac{3}{6}+\frac{2}{6}=\frac{3+2}{6}=\frac{5}{6}$

e) $\frac{1}{2}+\frac{1}{4}=\frac{2}{4}+\frac{1}{4}=\frac{2+1}{4}=\frac{3}{4}$

f) $\frac{1}{3}+\frac{1}{4}=\frac{4}{12}+\frac{3}{12}=\frac{4+3}{12}=\frac{7}{12}$

g) $\frac{3}{4}-\frac{2}{3}=\frac{9}{12}-\frac{8}{12}=\frac{9-8}{12}=\frac{1}{12}$

h) $\frac{2}{5}-\frac{1}{3}=\frac{6}{15}-\frac{5}{15}=\frac{6-5}{15}=\frac{1}{15}$

i) $\frac{6}{4}-\frac{1}{7}+\frac{1}{2}=\frac{3}{2}-\frac{1}{7}+\frac{1}{2}=\frac{3+1}{2}-\frac{1}{7}=\frac{4}{2}-\frac{1}{7}=\frac{28}{14}-\frac{2}{14}=\frac{28-2}{14}=\frac{26}{14}=\frac{13}{7}$

j) $\frac{2}{9}+\frac{1}{8}-\frac{1}{6}=\frac{16}{72}+\frac{9}{72}-\frac{12}{72}=\frac{16+9-12}{72}=\frac{13}{72}$

k) $\frac{1}{2}+3=\frac{3\cdot \:2}{2}+\frac{1}{2}=\frac{3\cdot \:2+1}{2}=\frac{7}{2}$