问题
解答题
解方程:
5.34+X=26.7
5X=13.5
X+2X=45
X÷0.6=4.5.
答案
(1)5.34+x=26.7
5.34+x-5.34=26.7-5.34,
x=21.36;
(2)5x=13.5
5x÷5=13.5÷5,
x=2.7;
(3)x+2x=45
(1+2)x=45,
3x=45,
3x÷3=45÷3,
x=15;
(4)x÷0.6=4.5
x÷0.6×0.6=4.5×0.6,
x=2.7.