b) \(697:\frac{15x+364}{x}=17\)
\(\frac{15x+364}{x}=697:17\)
\(\frac{15x+364}{x}=41\)
\(15+\frac{364}{x}=41\)
\(\frac{364}{x}=41-15\)
\(\frac{364}{x}=26\)
\(\Rightarrow x=14\)
Tìm x :
\(a,x.\left(5x+10\right)+5.\left(x23+30\right)-9.\left(3x+5\right)=100\)
\(b,10.\left(8x+9x\right)+8.\left(2x-1\right)-2.\left(5-6x\right)=20\)
\(c,\left(x.5^2\right).\left(194+x.20\right)=50\)
tìm x:
\(^{5^{x-2}-3^2=2^4-\left(2^8.2^4-2^{10}.2^2\right)}\)
\(697:\left[\left(15x+364\right):x\right]=17\)
\(\left(3x-2^4\right).7^3=2.7^4\)
tìm x thuộc Z sao cho:
c, (4x+1) chia hết (2x+2)
e, \(\left(x^2-2x+3\right)⋮\left(x-1\right)\)
f,\(\left(3x-1\right)⋮\left(x-4\right)\)
g, \(\left(x^2+3x+9\right)⋮\left(x+3\right)\)
h, \(\left(2x^2-10x+5\right)⋮\left(x-5\right)\)
Tìm x
a) \(\left(x-1\right)+\left(x-2\right)+\left(x-3\right)+.....+\left(x-100\right)=101\)
b) \(x+2x+3x+....+100x=1000\)
c) \(x+1+2\left(x+2\right)+3\left(x+3\right)+...+100\left(x+100\right)=101^2\)
d) \(\frac{1+x}{1}+\frac{1+x}{2}+\frac{1+x}{3}+...+\frac{1+x}{30}=0\)
e) \(\left(1+\frac{x}{1}\right)\left(2-\frac{x}{2}\right)\left(3-\frac{x}{3}\right)=0\)
BẠN NÀO BIẾT PHẦN NÀO THÌ GIÚP MIK NHÉ!
Thank!!
1. Tìm x,biết:
a) \(2^x\)- 15 = 17
b) \(\left(7x-11\right)^3\)= \(2^5.5^2+200\)
c) \(^{x^{10}=1^x}\)
d) \(x^{10}=x\)
e) \(\left(2x-15\right)^5=\left(2x-15\right)^3\)
2. Tính:
\(A=\frac{11.3^{22}.3^7-9^{15}}{\left(2.3^{14}\right)^2}\)
Tìm x
1) 70 : \(\frac{4x+720}{x}\) = 1/2
2) \(\frac{3}{\left(x+2\right)\left(x+5\right)}+\frac{5}{\left(x+5\right)\left(x+10\right)}+\frac{7}{\left(x+10\right)\left(x+17\right)}=\frac{x}{\left(x+2\right)\left(x+17\right)}\) Với x không thuộc { -2; -5; -10; -17 }
tìm x:
a) \(5^{x-2}-3^2=2^4-\left(2^8.2^4-2^{10}.2^2\right)\)
b) 697 : [ ( 15x + 364 ) : x ] = 17
c)\(\left(3x-2^4\right).7^3=2.7^4\)
\(a.5x-16+40+x\)
\(b.4x-10=15-x\)
\(c.-12+x=5x-20\)
\(d.7x-4=20+3x\)
\(e.5x-7=-21-2x\)
\(f.x+15=7-6x\)
\(g.17-x=7-6x\)
\(h.3x+\left(-21\right)=12-8x\)
\(k.125:\left(3x-13\right)=25\)
\(l.541+\left(218-x\right)=735\)
\(m.3\left(2x+1\right)-19=14\)
\(n.175-5\left(x+3\right)=85\)
\(o.4x-40=|-4|+12\)
\(p.x+15=20-4x\)
\(q.8x+|-3|=-4x+39\)
\(r.6\left(x-2\right)+\left(-2\right)=20-4x\)
cứ giải từ từ cũng đc
Tìm \(x\in Z\):
a. \(2\times\left(x-5\right)-3\times\left(x-4\right)=\left(-6\right)+15\times\left(-3\right)\)
b.\(\left(2x-5\right)-7=22\)
c.\(\left(2\times\left|x\right|-6\right)\times11=44\)
d.\(\left|x+3\right|+\left|x+5\right|+\left|x+9\right|=4x\)
e.\(\left|x-1\right|+\left|x-5\right|=4\)
g.\(x+\left(x+1\right)+\left(x+2\right)+.......+100=0\)
