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x + 2 < 0
x < -2
x - 4 > 0
x > 4
gambar A yg memenuhi
no 19)
70 + X+13 + x + 23 = 180
2x = 180 - 106
2x = 74
x = 37
sudut" itu 70 , 50 dan 60
jadi sudut terkecil = 50
no 20)
yg D
no 21)
-2x + 5 < -7
-2x < -12
x > 6
jawaban D
no 22)
-5b + 3 > -2b + 6
-3b > 3
b < -1
jawaban D
no 23)
4(x+5) = 28
x + 5 = 7
x = 2
luas = 49
jawaban D
no 24)
(6x+8) / 2 - (x+6) = 2x - 2
jawaban C
no 25)
3x = x+12
2x = 12
x = 6
jawaban A