Question

2.8比4.2等于括号x-1.2括号比9.6？

Answer 1

2.。：4.2=(x-1.2)：9.6
4.2(x-1.2)=9.6×2.8
4.2(x-1.2)=26.88
0.6x-0.6×1.2=3.84
0.6x=3.84-0.6×1.2
0.6x=3.12
x=3.12÷0.6
x=5.2

Answer 2

解方程：
2.8：4.2=(x-1.2)：9.6
4.2×(x-1.2)=2.8×9.6
等式两边同除以7，
0.6(x-1.2)=0.4×9.6
等式两边同除以0.6，
x-1.2=0.4×16
x=6.4+1.2
x=7.6