问题 解答题
4x+x=19.526.4-3x=15.3
7x=98x-3×4=12
4x+14=182x-0.5×2=0.8.
答案

(1)4x+x=19.5,

5x=19.5,

5x÷5=19.5÷5,

x=3.9;

(2)26.4-3x=15.3,

26.4-3x+3x=15.3+3x,

26.4-15.3=15.3+3x-15.3,

11.1÷3=3x÷3,

x=3.7;

(3)7x=98,

7x÷7=98÷7,

x=14;

(4)x-3×4=12,

x-12+12=12+12,

x=24;

(5)4x+14=18,

4x+14-14=18-14,

4x÷4=4÷4,

x=1;

(6)2x-0.5×2=0.8,

2x-1+1=0.8+1,

2x÷2=1.8÷2,

x=0.9.

单项选择题
单项选择题