7.8-10.8=4.2x
问题描述:
7.8-10.8=4.2x
答
7.8-10.8=4.2x
-3=4.2x
x=-3÷4.2
x=-5/7
7.8-10.8=4.2x
7.8-10.8=4.2x
-3=4.2x
x=-3÷4.2
x=-5/7