问题
解答题
求未知数x. (6+3x)÷2=18 x:8=3:2
|
答案
(1)(6+3x)÷2=18,
6+3x=18×2,
6+3x=36,
3x=30,
x=10,
(2)x:8=3:2,
2x=3×8,
2x=24,
x=12,
(3)
x+1 2
x=14,2 3
x=14,7 6
x=12.
求未知数x. (6+3x)÷2=18 x:8=3:2
|
(1)(6+3x)÷2=18,
6+3x=18×2,
6+3x=36,
3x=30,
x=10,
(2)x:8=3:2,
2x=3×8,
2x=24,
x=12,
(3)
x+1 2
x=14,2 3
x=14,7 6
x=12.