-6(2+A/3)+1/5(10-15A)=5 4/3(3/4X-1)-2-2X=2
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-6(2+A/3)+1/5(10-15A)=5 4/3(3/4X-1)-2-2X=2
-6(2+A/3)+1/5(10-15A)=5 4/3(3/4X-1)-2-2X=2
-6(2+A/3)+1/5(10-15A)=5 4/3(3/4X-1)-2-2X=2
-6(2+A/3)+1/5(10-15A)=5
-12-2A+2-3A=5
3A+2A=-12+2-5
5A=-15
A=-15÷5
A=-3
4/3(3/4X-1)-2-2X=2
X-4/3-2-2X=2
2X-X=-4/3-2-2
X=-16/3
(通分) a/a^a^a+3a+2 ,a/a^a+2a+1 ,-1/3a+6
a+a+1+a+2+a+3+a+4+a+5+a+6+a+7.+a+2013+a+2014=?
求和:1,a+a^2,a^3+a^4+a^5,a^6+a^7+a^8+a^9,···(a不等于0)
a-2a+3a-4a+5a-6a+7a-8a+9a-10a+11a.+99a-100a=
下列计算正确的是( )A .a^5-a^3=a^2 B.a^5*a^3=a^15 C.4^6/a^3=a^2 D.(-a^5)^2=a^10
逻辑运算中A表示什么 (1) 0 · A = 0 (10) 1' = 0; 0' = 1 (2) 1 · A = A (11) 1 + A = 1 (3) A · A = A (12) 0 + A = A (4) A · A' = 0 (13) A + A = A (5) A · B = B · A (14) A + A' = 1 (6) A·(B·C) = (A·B)·C (15) A
a=-1 求a-2a+3a-4a+5a-6a+...+99a-100a
快 2a-10/9-6a+a²÷(a²-25)*3a²+15a/5-a化简 2a-10/9-6a+a²÷(a²-25)*3a²+15a/5-a 20分钟内做出我给100悬赏分啊,化简 (2a-10)/(9-6a+a²) ÷ (a²-25) * (3a²+15a)/(5-a ) / 为分数线
逻辑运算中的A表示什么 (1) 0 · A = 0 (10) 1' = 0; 0' = 1 (2) 1 · A = A (11) 1 + A = 1 (3) A · A = A (12) 0 + A = A (4) A · A' = 0 (13) A + A = A (5) A · B = B · A (14) A + A' = 1 (6) A·(B·C) = (A·B)·C (15
(3a+5)-{9a-[6a+2-(12a-10)+2(a+1)]}
(3a+5)-{9a-[6a+2-(12a-10)+2(a+1)]
请问,这17道关于一元一次方程的题目我做对了吗?(1)A-5=6A-5+5=6+5A=11(2)0.3A=45A=13.5(3)5A+4=05A=4A=0.8(4)5A-2A=93A=9A=3(5)-3A+0.5A=10-2.5A=10A=4(6)6A-4=4A-56A-4A=-5+42A=-1A=0.5(7)2A+3A+4A=189A=18A=2(8)13A-15A+A=-3-3A=-3A=1(9)
EXCEL里,一列中最大的10个数相加的公式是多少?(比如A列有100个数,取其中最大的10个数,并相加)=large(A:A,1)+large(A:A,2)+large(A:A,3)+large(A:A,4)+large(A:A,5)+large(A:A,6)+large(A:A,7)+large
因式分解:(a+1)(a+3)(a+5)(a+7)+15 a(a-b+2)-6b(b+1)(a+1)(a+3)(a+5)(a+7)+15a(a-b+2)-6b(b+1)
合并同类项:a-2a-3a+4a+5a-6a-7a+8a+9a-10a-11a+12a+……+2008a+2009a-2010a-2011a
计算:(a+3a+5a+...+2013a)-(2a+4a+6a+...+2012a)=?
计算(a+3a+5a+.+2003a)-(2a+4a+6a+.+2004a)
在等比数列A(n)中,A(5)-A(1)=15,A(4)-A(2)=6,求A(3)