解方程。(1)4.5×6+4x=41(2)2x+1.5x=42(3)(x-4.5)×6=31.8(4)27-17x=13.4(5)(x+1.7)÷3=1.4(6)5x+4x=3x+18(7)4:=x:
(1)4.5×6+4x= 41 27+4x= 41 4x=14 x=3.5
题目简介
解方程。(1)4.5×6+4x=41(2)2x+1.5x=42(3)(x-4.5)×6=31.8(4)27-17x=13.4(5)(x+1.7)÷3=1.4(6)5x+4x=3x+18(7)4:=x:
题目详情
答案
(1)4.5×6+4x= 41
27+4x= 41
4x=14
x=3.5
3.5x=42
x=12
6x-27=31.8
6x=58.8
x=9.8
17x=27-13.4
x=0.8
x+1.7=4.2
x=2.5
6x=18
x=3
x=2.4
7.05x=21.15
x=3