Раскройте скобки и приведите подобные слагаемые 3,а+(а-4); 5а-(0,7а+8); 5,3b-(2b+3) ; 9,6b+(7-0,4b); 2c-(9-5,1c); -5c+(13-6c);
3,а+(а-4) = 3a+a-4 = 4a+4
5а-(0,7а+8) = 5a - 0,7a-8 = 4,3a-8
5,3b-(2b+3) = 5,3b-2b-3 = 1,3b-3
9,6b+(7-0,4b)= 9,6b+7-0,4b = 9,2b+7
2c-(9-5,1c) = 2c-9+10,2c = 12,2c-9
-5c+(13-6c)= -5c+13-6c = -11c+13
помогла?поблагодарите!
3,3a+a-4=4.3a-4
5a-0.7a-8=4.3a-8
5.3b-2b-3=3.3b-3
9.6b+7-0.4b=9.2b+7
2c-9+5.1c=7.1c-9
-5c+13-6c=-11c+13
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Verified answer
3,а+(а-4) = 3a+a-4 = 4a+4
5а-(0,7а+8) = 5a - 0,7a-8 = 4,3a-8
5,3b-(2b+3) = 5,3b-2b-3 = 1,3b-3
9,6b+(7-0,4b)= 9,6b+7-0,4b = 9,2b+7
2c-(9-5,1c) = 2c-9+10,2c = 12,2c-9
-5c+(13-6c)= -5c+13-6c = -11c+13
помогла?
поблагодарите!
3,3a+a-4=4.3a-4
5a-0.7a-8=4.3a-8
5.3b-2b-3=3.3b-3
9.6b+7-0.4b=9.2b+7
2c-9+5.1c=7.1c-9
-5c+13-6c=-11c+13