问题
解答题
求未知数x. 12-5x=6.5
|
答案
12-5x=6.5
5x=12-6.5
5x=5.5
x=5.5÷5
x=1.1;
x+2 3
x=421 2
(
+2 3
)x=421 2
x=427 6
x=42÷7 6
x=36.
求未知数x. 12-5x=6.5
|
12-5x=6.5
5x=12-6.5
5x=5.5
x=5.5÷5
x=1.1;
x+2 3
x=421 2
(
+2 3
)x=421 2
x=427 6
x=42÷7 6
x=36.