- Упростите выражения:-2)15/16у+3/8у-1/4у=4)8 1/15а+3 2/3а-20 4/5а=. Created by umedvedeva237. matematika-ru

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- Упростите выражения:-2)15/16у+3/8у-1/4у=
4)8 1/15а+3 2/3а-20 4/5а=

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elenamuraweva

Ответ:

$- \frac{15}{16} y + \frac{3}{8} y - \frac{1}{4} y = \\ y( - \frac{15}{16} + \frac{3}{8} - \frac{1}{4} ) = \\ y( \frac{ - 15 + 3 \times 2 - 1 \times 4}{16} ) = \\ y( \frac{ - 15 + 6 - 4}{16} ) = - \frac{13}{16} y$

$8 \frac{1}{15} a + 3 \frac{2}{3} a - 20 \frac{4}{5} a = \\ a( \frac{15 \times 8 + 1}{15} + \frac{3 \times 3 + 2}{3} - \frac{5 \times 20 + 4}{5} ) = \\ a ( \frac{121}{15} + \frac{11}{3} - \frac{104}{5} ) = \\ a( \frac{121 + 11 \times 5 - 104 \times 3}{15} ) = \\ a( \frac{121 + 55 - 312}{15} ) = \\ - \frac{136}{15} a = - 9 \frac{1}{15} a$

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abc ac 50 165 bd

6170a72c2a082cbe85d90d16ee33ed1f

7 6492bc6b9783d

help plizzzzzzeshe prodolzhenie est9egg10 olive oil11 cabbage12

40 najdite chislo esli ot etogo chisla2 60 ravny 120dam 10 ballovzaranee sp

a little 2. Tom isn't very popular. He has ____ friends. 3. Look! There is so___...

80 dokazhite chto pri lyubom znachenii peremennoj znachenie vy razheniya ravno nulyu

pervym lichno ot menya luchshij otvet

sravnite 468 775 i 1242pomogite pozhalujstadam 8 ballovzaranee spasibo

34pomogite pozhalujsta dam 10 ballovzaranee spasibotolko 5 i 6

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a little 2. Tom isn't very popular. He has __ friends. 3. Look! There is so_...