问题
解答题
解方程.
x-4.5=40.2
x+9.6=23.4
x÷10.5=52.5
x+8.36=14.9
0.18x=1.008.
答案
(1)x-4.5=40.2,
x-4.5+4.5=40.2+4.5,
x=44.7;
(2)x+9.6=23.4,
x+9.6-9.6=23.4-9.6,
x=13.8;
(3)x÷10.5=52.5,
x÷10.5×10.5=52.5×10.5,
x=551.25;
(4)x+8.36=14.9,
x+8.36-8.36=14.9-8.36,
x=6.54;
(5)0.18x=1.008,
0.18x÷0.18=1.008÷0.18,
x=5.6.