Mathematics grade VI

Variable/s: x
Coefficient/s: 16
Constant/s: None
Variable/s: z
Coefficient/s: 1
Constant/s: -7, 87
Variable/s: b, c
Coefficient/s: 3, 1
Constant/s: None
Variable/s: c
Coefficient/s: 1
Constant/s: 16, 7
Variable/s: a, b
Coefficient/s: 5, -8
Constant/s: 0
Answer:
Given
Variable
Coefficient
Constant