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m=12/24
m=1/2
b)3z+11=-28
3z=-28-11
3z=-39
z=-13
c)25-4y=6y+15
25-15=6y+4y
10=10y
1=y
2. Jika 3x+12=7x-8,tentukanlah nilai x+2
12+8=7x-3x
20=4x
x=5
x+2=5+2=7
m=12 : 24
m=1/2
b) 3z+11 =-28
3z =-28-11
3z = -39
z = 13
c) 25-4y= 6y+15
25-15= 6y+4y
10=10y
1=y
2. Jika 3x+12=7x-8,tentukanlah nilai x+2
12+8=7x-3x
20=4x
x=5