a/x-2=3 hoac x-2=-3
=> x=5 hoac x=-1
b//x-1/>1
=> x-1>1
=> x>2
c/4<x<25
d/-x(x+3)=0
=> x=0 hoac x+3=0=> x=-3
e/(x-2)(x-3).3=0
=> (x-2)(x-3)=0
=> x-2=0 hoac x-3=0
=> x=2 hoac x=3
a/x-2=3 hoac x-2=-3
=> x=5 hoac x=-1
b//x-1/>1
=> x-1>1
=> x>2
c/4<x<25
d/-x(x+3)=0
=> x=0 hoac x+3=0=> x=-3
e/(x-2)(x-3).3=0
=> (x-2)(x-3)=0
=> x-2=0 hoac x-3=0
=> x=2 hoac x=3
tìm x
a) \(2\left|x-6\right|+7x-2=\left|x-6\right|+7x\)
b) \(4\left(x-5\right)-7\left(5-x\right)+10\left(5-x\right)=-3\)
giúp mình với!!!
Tính :
a) \(1+\left(-3\right)+5+\left(-7\right)+9+\left(-11\right)\)
b) \(\left(-2\right)+4+\left(-6\right)+8+\left(-10\right)+12\)
Tìm \(x\in\mathbb{Z}\), biết :
\(x+\left(-23\right)=\left(-100\right)+77\)
Tính :
a) \(5+\left(-7\right)+9+\left(-11\right)+13+\left(-15\right)\)
b) \(\left(-6\right)+8+\left(-10\right)+12+\left(-14\right)+16\)
Tính các tổng :
a) \(-11+y+7\)
b) \(x+22+\left(-14\right)\)
c) \(a+\left(-15\right)+62\)
Tính :
a) \(126+\left(-20\right)+2004+\left(-106\right)\)
b) \(\left(-199\right)+\left(-200\right)+\left(-201\right)\)
Tính :
a) \(248+\left(-12\right)+2064+\left(-236\right)\)
b) \(\left(-298\right)+\left(-300\right)+\left(-302\right)\)
Kết quả thực hiện phép tính
(−551)+(−400)+(−449)\left(-551\right)+\left(-400\right)+\left(-449\right)(−551)+(−400)+(−449)
(−551)+(−400)+(−449)\left(-551\right)+\left(-400\right)+\left(-449\right)
(−551)+(−400)+(−449) là
Tính:
\(\left(-87\right)+\left(-12\right)+487+\left(-512\right)\)