Question

Раскройте скобки и упростите выражения . 7 ( 2x - y -4 ) - 3 (5x - 3 y - 9 ) 11(k-3n+8) - 3 (4k-11n+27) 9(2p-4q-7)+5(7q-4p+13) 3(4-x) -(2(x+1) -5 (x -7 )

Answer 1

14х- 7у-28-15х+9у+27=-х+2у-1
11k-33n+88-12k+33n-81=-k+87
19p-36q-63+35q-20p+65=-p-q+2
14x-3x-2x-2-5x+35=4x+33

Answer 2

7(2x - y - 4) - 3(5x - 3 + y - 9) + 11(k-3n+8) - 3(4k-11n+27) + 9(2p-4q-7) + 5(7q-4p+13) + 3(4-x) - (2(x+1) - 5 + (x - 7))

First, distribute the numbers outside the parentheses:

14x - 7y - 28 - 15x + 9 - 3y + 27 + 11k - 33n + 88 - 12k + 33n - 81 + 18p - 36q - 63 + 35q - 20p + 65 + 12 - 3x - 2 + 5 - x + 7

Combine like terms:

(14x - 15x) + (-7y - 3y) + (-28 + 9 + 27) + (11k - 12k) + (-33n + 33n) + 88 - 81 + (18p - 20p) + (-36q + 35q) - 63 + 65 + 12 - 3x - 2 + 5 - x + 7

- x - 12q - 7 - 3x + 2

Combine like terms again:

-4x - 12q - 5

So the simplified expression is -4x - 12q - 5.