Question

Tolong dibantu ya, nilainya 50 point

Answer 1

4. a) 2X+5=7
2X=7-5
2X=2
X=1
b) 7-2X=11
-2X=4
X=-2
c) 2a+7=5a-6
-3a=-13
a=13/3
d) 3(2X-4)=4(3X+5)
6X-12=12X+20
-6X=32
X=32/6
e) ⅔a+½=a+¼
⅔a-a=¼-½
⅓a=-¼
a=-¼/⅓

5. a) 13X+31=6
13X=-25
X=-25/13
b) 15X-21=3
15X=24
X=24/15
c) 15-3X=7
-3X=-8
X=8/3
d) gak jls