Question

a. 2/3 - ?/? = 4/5 -7/10
b. ?/? - 1 2/3 = 4 1/5
c. 2/3 + 1/2 = ?/? -1/4
d. 2 5/6 + ?/? = 4 1/5 - 1 1/10

ayuda porfa es para hoy, doy coronita

Answer 1

Respuesta:

espero tu coronita

Explicación paso a paso:

a. 2/3 - ?/? = 4/5 -7/10

$\frac{2}{3} -x=\frac{4.2}{5.2} -\frac{7}{10} \\\\\frac{2}{3} -x=\frac{1}{10} \\\\\frac{2.10}{3.10} -\frac{1.3}{3.10} =x\\\\\frac{17}{30} =x$

b. ?/? - 1 2/3 = 4 1/5

$x-1\frac{2}{3} =4\frac{1}{5} \\\\x-(1+\frac{2}{3}) =4+\frac{1}{5} \\\\x-(\frac{3}{3} +\frac{2}{3}) =\frac{4.5}{1.5} +\frac{1}{5} \\\\x-\frac{5}{3} =\frac{21}{5} \\\\x=\frac{21.3}{5.3} +\frac{5.5}{3.5} =\frac{88}{15} =5\frac{13}{15}$

c. 2/3 + 1/2 = ?/? -1/4

$\frac{2.2}{3.2} +\frac{1.3}{2.3} =x-\frac{1}{4} \\\\\frac{7}{6} +\frac{1}{4} =x\\\\\frac{7.2}{6.2} +\frac{1.3}{4.3} =x\\\\\frac{17}{12} =x$

d. 2 5/6 + ?/? = 4 1/5 - 1 1/10

$2\frac{5}{6} +x= 4\frac{1}{5} -1\frac{1}{10} \\\\2+\frac{5}{6} +x= 4+\frac{1}{5} -(1+\frac{1}{10} )\\\\\frac{2.6}{1.6} +\frac{5}{6} +x=\frac{4.5}{1.5} +\frac{1}{5} -(\frac{10}{10} +\frac{1}{10} )\\\\\frac{17}{6} +x=\frac{21}{5} -\frac{11}{10} \\\\x=\frac{21.6}{5.6} -\frac{11.3}{10.3} -\frac{17.5}{6.5} \\\\x=\frac{8}{30} =\frac{4}{15}$