(a) Divide both sides by 2: $y = 60 \div 2 = 30$. (b) Add 3 to both sides: $-5 = 5x$. Divide by 5: $x = -1$. (c) Divide both sides by $-53$: $w = \frac{-15}{-53} = \frac{15}{53}$. (d) Subtract 13 from both sides: $-z = -5$. Multiply by $-1$: $z = 5$. Alternatively, $z = 13 - 8 = 5$. (e) Add $k$ to both sides: $2k + 8 = 12$. Subtract 8: $2k = 4$. Divide by 2: $k = 2$. (f) Subtract $m$ from both sides: $6m = -3$. Divide by 6: $m = -\frac{1}{2}$. (g) Subtract $n$ from both sides: $2n = 10$. Divide by 2: $n = 5$.