2\/3x除以1\/4等于3\/8,(4加x)乘4等于21.68解方程
解:2\/3x=3\/8*1\/4 2\/3x=3\/32 x=3\/32*3\/2 x=9\/64 4(4+x)=21.68 解:4+x=21.68÷4 4+x=5.42 x=1.42
(1.42➕x)✖️4=21.68
(1.42+x)×4=21.68 1.42×4+4x=21.68 5.68+4x=21.68 两边同时减5.68 5.68+4x-5.68=21.68-5.68 4x=16 x=16\/4 x=4
1.24+x的和×4=21.68解方程
(4+x)×4=21.68 4+x=21.68÷4 4+x=5.42 x=5.42-4 x=1.42
解方程或比例. 4x+16=21.68 4: =x: : =8:x.
①4x+16=21.68, 4x+16-16=21.68-16, 4x=5.68, 4x÷4=5.68÷4, x=1.42;②4:2\/3=x:1\/6, 2\/3x=4×1\/6,2\/3x×3\/2=4\/6×3\/2 x=1; ③1\/4:1\/12=8:x, 1\/4x=1\/12...
解方程或比例. 4x+16=21.68 4:23=x:1
68, 4x+16-16=21.68-16, 4x=5.68, 4x÷4=5.68÷4, x=1.42;②4:23=x:16, 23x=4×16,23x×32=46×32 x=1; ③14:112=8:x, 14x=112×8, 14x=23, 14x×4=23×4, X=83.
25-x=4\/3×(10+x)解方程?
解方程 25 - x = 4\/3 × (10 + x):首先将右侧的表达式展开:25 - x = 4\/3 × 10 + 4\/3 × x 再将等式两边同时除以 4\/3:25\/4\/3 - x\/4\/3 = 10 + x 整理得:25\/4\/3 - x\/4\/3 = 10 + x 25\/4 * 3 - x * 3\/4 = 10 * 4\/3 + x * 4\/3 18.75 - 2....