1. Раскройте скобки: 1) (a – b) + (c – d) 2)- (-a + b) – (- c – d) 3) (a + b) – (c + d) 4) –(a + b) + (- c – d) 5) – (a – b) – (c + d) 6) (a – b) - (c – d) 7)- (-a - b) + (- c – d) 8) (a + b) + (- c + d) 9) –(a - b) + (-c – d) ...

Question

1. Раскройте скобки: 1) (a – b) + (c – d) 2)- (-a + b) – (- c – d) 3) (a + b) – (c + d) 4) –(a + b) + (- c – d) 5) – (a – b) – (c + d) 6) (a – b) - (c – d) 7)- (-a - b) + (- c – d) 8) (a + b) + (- c + d) 9) –(a - b) + (-c – d) ...

1. Раскройте скобки: 1) (a – b) + (c – d) 2)- (-a + b) – (- c – d) 3) (a + b) – (c + d) 4) –(a + b) + (- c – d) 5) – (a – b) – (c + d) 6) (a – b) - (c – d) 7)- (-a - b) + (- c – d) 8) (a + b) + (- c + d) 9) –(a - b) + (-c – d) 10) – (a + b) – (c + d) 3. Решите уравнение: а) 84 – (x – 36) = 18 б) 96 – (26 – y) = 4

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Accepted Answer

1) 1 a-b+c-d 2 a-b+c+d 3 a+b-c-d 4 -a-b-c-d 5 -a+b-c-d 6 a-b-c+d 7 a+b-c-d 8 a+b-c+d 9 -a+b-c-d 10 -a-b-c-d 3) a) 84-(x-36)=18 84-x+36=18 x=84+36-18 x=102 b)96-(26-y)=4 96-26+y=4 70+y=4 y=4-70 y=-66