⅓(1+x)≥2/*3
1+x≥6
x≥5
b)-4(x+2)<8
-4x-8<8
-4x<16/:(-4)
x>-4
c)3(x-2)≤6x
3x-6≤6x
3x-6x≤6
-3x≤6/:(-3)
x≥-2
d)4x≥2(x+5)
4x≥2x+10
4x-2x≥10
2x≥10/:2
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⅓(1+x)≥2/*3
1+x≥6
x≥5
b)-4(x+2)<8
-4x-8<8
-4x<16/:(-4)
x>-4
c)3(x-2)≤6x
3x-6≤6x
3x-6x≤6
-3x≤6/:(-3)
x≥-2
d)4x≥2(x+5)
4x≥2x+10
4x-2x≥10
2x≥10/:2
x≥5