1) 3(1,2n+8)=4(5-0.1n)
3.6n + 24 = 20 – 0.4n
3,6n + 0,4n = 20 – 24
4n = -4
n = -1
2) 7(y+6)=4(3y-5)-3
7y + 42 = 12y – 20 – 3
7y – 12y = – 3 – 20 – 42
-5y = -65
y = 13
1) 3(1,2n+8)=4(5-0.1n)
3.6n + 24 = 20 – 0.4n
3,6n + 0,4n = 20 – 24
4n = -4
n = -1
2) 7(y+6)=4(3y-5)-3
7y + 42 = 12y – 20 – 3
7y – 12y = – 3 – 20 – 42
-5y = -65
y = 13