Question

七年级上数学合并同类项试题、要题不要答案、比如：

Answer 1

(1) -8x+6x-x(2) 4ab-5ab+2ab(3) 2x²+x-x²-x(4) 3x²-6+4x-6x-2x²+5(5) 3a-b+(5a-3b+3)(6) (2b-3a)-(2a-3b+1)(7) 4x²+2(x²-y²)-3(x²+y²)(8) 3(a²-2ab)-(-ab+b...