问题
解答题
方程6x÷3+4.5=33.9的解是( )
A.14.7
B.21.6
C.18.5
D.13.9
答案
6x÷3+4.5=33.9,
6x÷3+4.5-4.5=33.9-4.5,
6x÷3×3=29.4×3,
6x=88.2,
6x÷6=88.2÷6,
x=14.7,
故选:A.
方程6x÷3+4.5=33.9的解是( )
A.14.7
B.21.6
C.18.5
D.13.9
6x÷3+4.5=33.9,
6x÷3+4.5-4.5=33.9-4.5,
6x÷3×3=29.4×3,
6x=88.2,
6x÷6=88.2÷6,
x=14.7,
故选:A.