1. х-16=126/9, x-16=14, x=14+16, x=30
2. x+5=224/28, x+5=8, x=8-5, x=3
3. x+76=15*7, x+76 =105, x=105-76, x=29
4. x-3=144/36, x-3=4, x=4+3, x=7
5. y-8=84/21, y-8=4, y=4+8, y=12
6. x+67 =4*18, x+67=72, x=72-67, x=5