Answer:
Step-by-step explanation:
7z + 10 - z = 8z - 2(z - 5)
7z + 10 - z = 8z - 2z + 10
6z + 10 = 6z + 10
6z - 6z = 10 - 10
0 = 0
Therefore, 7z + 10 - z = 8z - 2(z - 5)
40,
since
400 x 4 + 1.6 grams. which is the closest
4 x 10 = 40
Answer:
B) 120
Step-by-step explanation:
180 - 60 = 120
Hope that helps!