问题
解答题
(1)
|
答案
(1)
x+24=522 5
x+24-24=52-242 5
x×2 5
=28×5 2 5 2
x=70;
(2)x-
x=17 3 20
x(1-
)=173 20
x×17 20
=17×20 17 20 17
x=20;
(3)4x+x=23
5x=23
5x÷5=23÷5
x=4
.3 5
(1)
|
(1)
x+24=522 5
x+24-24=52-242 5
x×2 5
=28×5 2 5 2
x=70;
(2)x-
x=17 3 20
x(1-
)=173 20
x×17 20
=17×20 17 20 17
x=20;
(3)4x+x=23
5x=23
5x÷5=23÷5
x=4
.3 5