问题
解答题
|
答案
(1)4x=2 3
4x÷4=
÷42 3
x=
;1 6
(2)x÷9=4 5
x÷9×9=
×94 5
x=
;36 5
(3)3x+2x=5 7
5x=5 7
5x÷5=
÷55 7
x=
;1 7
(4)
x+x=1 5 10 13
x=6 5 10 13
x×6 5
=5 6
×10 13 5 6
x=
;25 39
(5)
x=273 8
x×3 8
=27×8 3 8 3
x=72;
(6)
x-8=375 6
x-8+8=37+85 6
x=455 6
x×5 6
=45×6 5 6 5
x=54.