Step-by-step explanation:
5m³ + 2m - 7m³ - 8m
= -2m³ -6m
= -2m(m² + 3)
4/20 is 0.20, which is equivalent to 20%.
Remember that 1.0=100%, 0.5=50%, 0.2=20%, 0.05=5%, and so on.
An expression is like an equation, but without an equal sign.
Therefore, you could say...
14 stones + 6 stones
or just...
14 + 6
Answer:
a=-1
If you need explanation please comment
