Answer:

Step-by-step explanation:
1.
2 yellow marables of 10 all marables

2.
1 yellow marable of 9 all marables


1,200 because 4x 3 is 12 and 40 x 30=1,200
Uncle John is 37 hope this helps out Bc y’all helped me when I needed it
Answer:
x=10
Step-by-step explanation:
2x-7=13
13+7=20
20/2=10
lets see if it works:
2(10)-7-13
20-7=13
it works! which means is 10
please mark me as brainliest!!<3