X=54 you do 331-7=324 the do 324/6=54 the end hope this helps
Answer:
600 decimeters
Step-by-step explanation:
multiply the meter length by 10
60x10=600
Answer:b=-10.5, a=31.5
Step-by-step explanation: 3b=-a , -3b=a
a+b =21
-3b+b = 21
-2b=21
b=-10.5
a=-3b
a=-3*-10.5=31.5
