Answer:
b = 7.4
Step-by-step explanation:
b - 3 + 4b = 34
combine like terms:
5b - 3 = 34
5b = 37
divide by 5:
b = 7.4
Answer:
0.6 kg
Step-by-step explanation:
If one frame is 0.2 then three frames will be 3*0.2 = 0.6 kg.
Answer:
Step-by-step explanation:
Bấm máy tính hệ phương trình là ra