5X减2.4乘5等于8,解方程要过程谢谢
问题描述:
5X减2.4乘5等于8,解方程要过程谢谢
答
5X-2.4×5=8 5X-12.5=8 5X-12.5+12.5=8+12.5 5X÷5=20.5÷5 X=4.1
答
5x-2.4×5=8
5x-12=8
5x=8+12
5x=20
x=20÷5
x=4