解下列不等式, (1)①3(x+1) >5x+4 ②x-1尀2 ≤ 2x-1尀3 (2)①3-(2x-1)≥-2 ②-10+2(1-x)<3(x-1)

2024-11-24 15:34:32
推荐回答(2个)
回答1:

(1)①3(x+1) >5x+4
3x+3>5x+4
3-4>5x-3x
-1>2x
x<-1/2
②x-1\2 ≤ 2x-1\3
x-2x ≤ 1/2-1\3
-x ≤ -1/6
x≥1/6
(2)①3-(2x-1)≥-2
3-2x+1≥-2
-2x≥-2-1-3
-2x≥-6
x≤3
②-10+2(1-x)<3(x-1)
-10+2-2x<3x-3
-10+2+3<3x+2x
-5<5x
x>-1

回答2:

①x<-1/2 ②x≥-1/6 (2)①x≤3 ②x>-1