3.4*0.6+2*x=4.
问题描述：
3.4*0.6+2*x=4.
x（3分之2+2分之1+7分之1+1）=37
答
2.04＋2x=4.6
2x=4.6-2.04
2x=2.56
x=1.28
x(2/3+1/2+1/7+1)=37
x(28/42+21/42+6/42+42/42)=37
x(28+21+6+42)=37*42
97x=37*42
x=1554/97