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2x < 7+1
2x < 8
x < 4
2. 4x-2 > 2x+5
4x-2x > 5+2
2x > 7
x > 7/2 atau x > 3½
3. 2(x-30) < 4(x-2)
2x-60 < 4x-8
2x-4x < -8 + 60
-2x < 52 (kalikan dgn -1 tanda < brubh mnjadi >)
2x > -52
x > -52/2
x > -26
4. ???
5. ½ + (-1) < ⅓(t-4)
½ + (-2/2) < ⅓t - 4/3
(1-2)/2 < ⅓t - 4/3
-½ < ⅓t - 4/3
-½ - ⅓ t < -4/3
-⅓t < -4/3 + ½
-⅓t < -8/6 + 3/6
-⅓t < (-8+3)/6
-⅓t < -5/6
t < -5/6 ÷ (- ⅓)
t < -5/6 × -3
t < 15/6
t < 5/2
semoga dapat di pahami
2x<7+1
x=8/2
x=4
2. 4x-2>2x+5
4x-2x>5+2
2x>7
x>7/2
3. 2(x-30)<4(x-2)
2x-60<4x-8
2x-4x<-8+60
-2x<52
x<52/-2
x<-26
4. 6x-3>2(x+3)
3 2
3(2x-1)>2(x+3)
3 2
2x-1>x+3
x>4
5. 1/2 +(-1)<1/3(t-4)
1/2 - 2/2 < 1/3(t-4)
-1/2 < 1/3(t-4)
-1/2 x 3/1 < t-4
-3/2 <t-4
-3/2 +4 < t
-3/2 +8/2 < t
5/2 < t atau t>5/2