七年级英语新课时作业答案
来源:学生作业帮助网 编辑:作业帮 时间:2024/11/24 12:42:26
X-(1/5X+1/5X-15)=3/5X+15
3/5X=X/15我同学也不会做/代表分数线
0.5x(x+4)-0.4(x+4)=3.2
0.5x(x+4)-0.4(x+4)=3.2 x是多少
2-3(x-1)=1-2(1+0.5x)
5 -5x -7 /2=4+x/3
(-x^2+8+5x^3)+(-2x^3+5x-7) 其中x=-2
比较(x+3)(x+6)与(x+2)(x+7) 5x-3>2-4/2x+1
(x+1)(x+2)(x+3)(x+4)-(x^2+5x+3)(x^2+5x+7)=?
2(x^3)^2*x^3-(3x^3)^3+(5x)^2*x^7
-7+13-6+20= (-49)-(+91)-(-5)+(-9)= 1+(-2)+|-2-3|-5= (-5)x(-7)-5x(-6)=
2*(2.5x-1)=13.6-3(x-2)解方程
5x+ 4/6 ≥ 7/8 -1-x/3
6-2分之5x+7=-4分之x+17的解是多少?
(1)2分之5-3x=3分之3+5x (2)4分之x+2-6分之2x-3=1 (3)12分之x-1=15分之2x (4)5分之y+17-4分之3y-7=-2
4分之x—7-3分之5x+8=1
X=几?5X-4=40 5(X-4)=40 (48-3X)÷3=0 X+5X-7X=几?5X-4=40 5(X-4)=40 (48-3X)÷3=0X+5X-7=11
7+2{5-3[11-4(5x-3)]}=-1
解方程.X+4/5=2 1/5X+1/2X=3/4 X-5/7=1/3解方程.X+4/5=2 1/5X+1/2X=3/4 X-5/7=1/3 X-7/8=5/12
已知方程2(X+1.5X)=25,请填写下表: X 1 2 3 4 5 6 7 … 2(X+1.5X) ( ) ( ) ( ) ( )已知方程2(X+1.5X)=25,请填写下表: X 1 2 3 4 5 6 7 …2(X+1.5X) ( ) (
3(x+2.5)=5x x=3.75 为什么是这样做
(5x+2)(x-2) -5(x+1)(x-3)怎么做
x+5=5x÷3怎么做?
5*(x-1/3)=2 5x(x-1/3)=25*(x-1/3)=2 5x(x-1/3)=2 15(x+3)=141
1/2{1/3[1/4(1/5x+5)-4]+3}=1,x===
2.4-( x-4)/2.5=3/5x(2x+1)/3-(x-5)=3/2
2.4- (x-4)/2.5=3/5x 怎么写
3(5x+4)+4(x-1)=2-12(5x-5)
3\5{1\3[-3\4-(4\3-1)-x\2-3\4]-3\4]-3\4+5}=1-2\5x x=?
2/5 x+ x-1/2和3(x-1)/2-8/5x
4-3×(2-x)=5x
2(x+4)-3(5x+1)=2-x