问题
解答题
解方程:
m÷0.6=4.5
2y+y=45
9x-1.8=5.4.
答案
(1)m÷0.6=4.5,
m÷0.6×0.6=4.5×0.6,
m=2.7;
(2)2y+y=45,
3y=45,
3y÷3=45÷3,
y=15;
(3)9x-1.8=5.4,
9x-1.8+1.8=5.4+1.8,
9x=7.2,
9x÷9=7.2÷9,
x=0.8.
解方程:
m÷0.6=4.5
2y+y=45
9x-1.8=5.4.
(1)m÷0.6=4.5,
m÷0.6×0.6=4.5×0.6,
m=2.7;
(2)2y+y=45,
3y=45,
3y÷3=45÷3,
y=15;
(3)9x-1.8=5.4,
9x-1.8+1.8=5.4+1.8,
9x=7.2,
9x÷9=7.2÷9,
x=0.8.