Упростите
1. (x-5)-(7-x)+(9-x)
2. b+(-7m+2n)
3. -3p-(-5x+2y)
4. –(a-4b)+(-8x+3y)
5. (a-9)-(13-a)+(11-a)
6. 7(4а + 6) – 12а
1. (x-5)-(7-x)+(9-x)
2. b+(-7m+2n)
3. -3p-(-5x+2y)
4. –(a-4b)+(-8x+3y)
5. (a-9)-(13-a)+(11-a)
6. 7(4а + 6) – 12а
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Answers & Comments
2. b-7m+2n
3. -3p+5x-2y
4. -a+4b-8x+3y
5. a-9-13+a+11-a= 2a-11
6. 28a+42-12a= 16a+42
b+(-7m+2n)=b-7m+2n
-3p-(-5x+2y)=-3p+5x-2y=5x-3p-2y
-(a-4b)+(-8x+3y)=-a+4b-8x+3y=4b-a-8x+3y
(a-9)-(13-a)+(11-a)=a-9-13+a+11-a=a-11