问题
解答题
解方程. (1)6x+0.5×7=6.5 (2)
|
答案
(1)6x+0.5×7=6.5
6x+3.5=6.5
6x+3.5-3.5=6.5-3.5
6x=3
6x÷6=3÷6
x=0.5;
(2)
=7.5:122.5 x
7.5x=2.5×12
7.5x÷7.5=30÷7.5
x=4.
解方程. (1)6x+0.5×7=6.5 (2)
|
(1)6x+0.5×7=6.5
6x+3.5=6.5
6x+3.5-3.5=6.5-3.5
6x=3
6x÷6=3÷6
x=0.5;
(2)
=7.5:122.5 x
7.5x=2.5×12
7.5x÷7.5=30÷7.5
x=4.