Question

9,14z-(3,78z+2,8z)=12,45

Answer 1

9,14z - 3,78z - 2,8z =12,45
2,56z =12,45
z=12,45/ 2,56= 1245/256=4 целых 221/256

Answer 2

9,14z-(6,58z)=12,45 9,14z-6,58z=12,45 2,56z=12,45 Z=4 2,21/12,45