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Fara064
@Fara064
June 2022
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Упростите выражения:
1)а+(-b)-(-2a);
2)-а-(+а)+2b-(-b);
3)-a-(-b)-4a;
4)-a-(+3a)+(-b)-b.
Заполните рамочки в верном равенстве:
1 ) -7-(?)=-2;
2 ) ? -(-6)=4;
3 ) ? -(+10)=-7;
4 ) 2 -(?)=0;
5 ) - 6 -(?)=-3.
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АксиньяА
1)3a-b
2)-2a+3b
3)-5a+b
4)-4a-2b
1)-5
2)-2
3)3
4)2
5)-3
0 votes
Thanks 5
зей1
A+(-b)-(-2a)=a+2a-b=3a-b
-a-(+a)+2b-(-b)=-a-a+2b+b=-2a+3b
-a-(-b)-4a=-a+b-4a=-5a+b
0 votes
Thanks 2
зей1
-7-(-5)=-7+2=-5
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Answers & Comments
2)-2a+3b
3)-5a+b
4)-4a-2b
1)-5
2)-2
3)3
4)2
5)-3
-a-(+a)+2b-(-b)=-a-a+2b+b=-2a+3b
-a-(-b)-4a=-a+b-4a=-5a+b