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3(X+2)+5=2(X+15)
3(X+2)+5=2(X+15)
3x+6+5=2x+30
3x+11=2x+30
x=19
1b.
5- 2/3(X+6)=2(8-1/2X)
5-(2/3)x+4=16-x
15-2x + 12 = 48-3x
15+12-48=-3x+2x
-21=-x
x=21
soal tidak jelas apakah 2/3 itu pangkat?
2a.
2(2X+3)-16>0
4x + 6 -16> 0
4x - 10 > 0
x > 10/4
x > 2 1/2 ( baca 2 setengah)
2b.
8(1-3/4X)-10_<30-2/3x
8-6x-10 < 30-(2/3)x
24-18x-30 < 90-2x
24-30-90 < -2x + 18x
-96 < 16x
-6 < x
*ralat jawaban 1b