(1)4x^2+9⼀x^2 (2) 2-3x-4⼀x(x>0) (3) x+(1⼀x-1) (x>1) (4)3x(2-x) (0<x<2) 请写出完整的过程,谢谢!!

2024-12-17 18:25:40
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回答1:

【1】2x-1=3 2x=4 x=2 【2】3-4x=2-x 3x=1 x=1/3 [3]0.2x 1=-1.8x 2x=-1 x=-1/2 [4]1/3x=9-2/3x x=9 【1】2x-1