未知数x的值2/9x=1/3×22x=3×2/73.5x-17=82.7×4-x÷2=1.58x-2.8=0.99.4-(2.4x+3)=4x
问题描述：
未知数x的值
2/9x=1/3×2
2x=3×2/7
3.5x-17=8
2.7×4-x÷2=1.5
8x-2.8=0.9
9.4-(2.4x+3)=4x
答
x=3
x=3/7
x=50/7
x=9.3
x=37/80
x=1
答
2/9x=1/3x2 2/9x=2/3 x=2/3x9/2 x=32x=3x2/7 2x=6/7 x=6/7x1/2 x=3/73.5x-17=8 3.5x=25 x=50/7 2.7x4-x/2=1.5 10.8-1/2x=1.5 -1/2x=-9.3 x=18.68x-2.8=0.9 8x=3.7 x=37/809.4-(2.4x+3)=4x 9.4-2.4x-3=4x 6.4=6.4xx=1