Question

Utiliza la memoria de la calculadora y resuelve
1. (42 - 3) / 7 =
2. (6 + 17) / 3=
3. (2 x 47) / (6 + 9) =
4. (6 + 22) / (47 - 21) =
5. (9 - 32) / (8 - 27) =
6. (9.2 x 6.7) / (4 + 16.2) =
7. 4.7 / (16 - 7) =
8. 4.9 / (3.7 x 2.6) =
9. (11.2 - 9.47) / (12 - 0.81) =
10. (9.2 x 6.7) / (4 + 16.2) =
11. 4.7 / (16 - 7) =
12. 8 + (6 / (9 + 7)) =
13. 4.9 / (3.7 x 2.6) =
14. (1.9 + 12.2) /(8 -3) =

Doy mejor respuesta al que conteste
plz es para hoy

Answer 1

Solucion.

$1.\\\\\frac{(42-3)}{7}$

Primero se resuelve lo del parentesis.

$\frac{39}{7}=\\\\R/:5,5714...$

$2.\\\\\frac{(6+17)}{3}=\\ \\\frac{23}{3}\\ \\R/:7,666...$

$3.\\\\\frac{(2*47)}{(6+9)}=\\ \\\frac{94}{15}\\ \\R/:6,266...$

$4.\\\\\frac{(6+22)}{(47-21)}= \\\\\frac{28}{26}\\ \\Simplificando\\\\\frac{14}{13}\\ \\R/:1,0769...$

$5.\\\\\frac{(9-32)}{(8-27)}=\\ \\\frac{-23}{-19}$

Reduzco la fraccion utilizando -1

$\frac{-23}{-19} *\frac{-1}{-1}\\ \\\frac{23}{19}\\ \\R/:1,210...$

$6.\\\\\frac{(9,2*6,7)}{(4+16,2)}=\\ \\\frac{15,9}{17,2}\\ \\R/:0,9244...$

$7.\\\\\frac{4,7}{(16-7)}=\\ \\\frac{4,7}{9}=\\ \\R/:0,522...$

$8.\\\\\frac{4,9}{(3,7*2,6)}= \\\\\frac{4,9}{9,62}=\\ \\R/:\frac{4,9}{9,62}$

$9.\\\\\frac{(11,2-9,47)}{(12-0,81)}\\ \\\frac{1,73}{11,19}\\ \\R/:0,15460...$

$10.\\\\\frac{9,2*6,7}{4+16,2}\\ \\\frac{61,64}{20,2}\\ \\R/:3,05148...$

$12.\\\\\frac{8}{\frac{(9+7)}{6} } =\\ \\\\\frac{8}{\frac{16}{6} }=$

Utilizamos la formula de la oreja (extremos y internos)

$\frac{\frac{a}{b}}{\frac{c}{d}}=\\\\\frac{(a*d)}{(b*c)}=$

Reemplazamos:

$\frac{\frac{8}{1}}{\frac{16}{6}}=\\\\\frac{(8*6)}{(1*16)}=\\ \\\frac{48}{16}=$

Simplificando.

$\frac{6}{2}=\\\\3\\\\R/:3$

$14.\\\\\frac{(1,9+12,2)}{(8-3)}=\\ \\\frac{14,1}{5}=\\\\R/:2,82$