(1)3.5x+x-14=18.4 (2)2.7*2-1.5x=0 (3)13x-6.8x+x=46.8 (4)17.5-0.5x_数学解答

(1)3.5x+x-14=18.4 (2)2.7*2-1.5x=0 (3)13x-6.8x+x=46.8 (4)17.5-0.5x=12.7 (5)5x-1.4x=54

人气：420 ℃　时间：2020-02-26 22:45:13

解答

(1)3.5x+x-14=18.44.5x=32.4 x=7.2 (2)2.7*2-1.5x=05.4=1.5x x=3.6 (3)13x-6.8x+x=46.8 7.2x=46.8 x=6.5(4)17.5-0.5x=12.7 17x=12.7x=127/170(5)5x-1.4x=543.6x=54x=15