7x+8.5=9 8.7-1.2x=4.3 2.3+7x=4 我算不出来
1个回答
7x+8.5=9 7x=0.5 x=1/14
8.7-1.2x=4.3 1.2x=4.4 x=11/3
2.3+7x=4 7x=-1.7 x=-17/70
相关问题
3x3-1=8x1,5x5-3x3=16=8x2,7x7-5x5=24=8x3,9x9-7x7=32=8x4…… 你能发
7x=2+3x 3.5x=28 5(x+8)-5=6(2x-7) 9(x-4)=7(4-x)
7/9*(x-0.4)=2/3 5/8x+1.8=4.3
简算题:1x2/1+2x3/1+3x4/1+4x5/1+5x6/1+6x7/1+7x8/1+8x9/1
解方程:88x - 3.4=7.4 .2.1+4x=8.9 2x-1.5x=7.5
(4.5-x)*7=17.5 x/2+4=3/2x+1 7/2*2/3-4x=7/3 5/8(x-.3)=75% 1+x
1/4x-1/2=3/4;7x-5/4=3/8;2x-1/6=5x+1/8;1/2x-7=9x-2/6;1/5x-1/2
解方程 (1)4x-2=3-x (2)2-7x=2x-4 (3)10x-3=9 (4)5.8x-3.7x=4.2 (5)
解方程.[1/2]+[1/4]+x=[9/4]9x-[7/5]=[8/5][7/10]+[1/2]-x=[2/3].
2x+7\8=7\8.3x-3\4=1/4