1. 5-2y=117 2. 3 (m-1)+5=m+10 3. 17-3 (x+11)=x+12 4. 2/3x-1=1/4x+9 plis ya di jawab

1. 5-2y=117
-2y=117-5
-2y=112
y=112/-2
y= -56
2.3(m-1)+5=m+10
3m-3+5=m+10
3m-m=10+3-5
2m=8
m=4
3.17-3(x+11)=x+12
14x+154=x+12
14x-x=12-154
13x= -142
x= -142/13