Answer:
Subtraction Property of Equality
Step-by-step explanation:
5x-2x+2=10
3x+2=10
2*45 = 90
2*33 = 66
90 + 66 = 156
Miles ate 156 grams in all.
Hope this helps! Have a great day :)
B would be correct the -3 x and 3 x cancel out
Answer:
RM = 12 cm
Step-by-step explanation:

Assuming 20 is the hypotenuse cus there is no picture:




If It's not the hypotenuse:




But I find it unlikely that 20 wasn't the hypotenuse so ignore that unless it applies.
Hope this helped. :0)