Приведение подобных слагаемых 1) 5a-4b+6a+3b 2) 7(5-y)+3(y-7) 3) 4(3a-c)-(5a-2c) 4) 4+x-(2x+(x-3))
1) 5a-4b+6a+3b=11a-b 2) 7(5-y)+3(y-7)= 3) 7(5-y)+3(y-7)= 4) 4+x-(2x+(x-3))=