问题
解答题
解方程.
0.16+x=3.65
x-1.2=0.6
7x=42
x÷0.8=1.25.
答案
(1)0.16+x=3.65,
0.16-0.16+x=3.65-0.16,
x=3.49;
(2)x-1.2=0.6,
x-1.2+1.2=0.6+1.2,
x=1.8;
(3)7x=42,
7x÷7=42÷7,
x=6;
(4)x÷0.8=1.25,
x÷0.8×0.8=1.25×0.8,
x=1.