答:
15.6/4-3.5x=1.1
3.9-3.5x=1.1
-3.5x=1.1-3.9
-3.5x=-0.8
x=8/35
x等于35分之8
1.4x/3=6.3*4
1.4x=6.3×4×3
x=0.7×9×2×6÷1.4
x=9×6
x=54
答:
15.6/4-3.5x=1.1
3.9-3.5x=1.1
-3.5x=1.1-3.9
-3.5x=-0.8
x=8/35
x等于35分之8
1.4x/3=6.3*4
1.4x=6.3×4×3
x=0.7×9×2×6÷1.4
x=9×6
x=54