Các câu hỏi tương tự
bai 1 tim x biet
a)x-43+7=49-(50+3)
b)-(x-16)+70=45
bai2 tim x biet
a)2x-(-60)=3x-18
b)-45-5x=10-4x
tim x biet
45-(3x+9)/13=42
(x+1)+(2x+2)+.....+(20x+20)=1050
tim x biet
a) 105-3x=60
b) 45-(3x+9)/13=42
c)2x.42-2x+1=26-23
d)(x+1)+(2x+2)+.....+(20x+20)=1050
tim x biet -{x-3} +2.{3x+2}=x-4
la dau ngoac don
tim x biet /3x+1/+/4-x/=3
tim x biet:
a,10-2(4-3x)=-4
b,-12+3(-x+7)=-18
tim x biet 50%x+2/3x=x+4
tim x biet : a,-12/21×x + 3/7=-4/3, b, 2x +-3^2=5/4 , c, 75% x- 2/5=3/10, d, (3x-2)×(x+7)
giup mik voi tim x biet
1, 5-(3x+6)>-2x+1
2, -7.(x+2)-3x<6-11x
3, (x+1).(x+2)-x.(x+3)<4-x
4, 6-2x>17+(4-x)