Answer:
6
Step-by-step explanation:
12+x=3x
2x=12
x=6
Answer:
610 cm
Step-by-step explanation:
78.9 x 100 = 7890 cm 85 x 100 = 8,500 cm
8,500 - 7890 = 610 cm
Answer:
associative
Step-by-step explanation:
u switched parentheses
Answer:

Step-by-step explanation:

Combine all like terms.


Multiply both sides by -1.
