Abag is filled with green and blue marbles. there are 97 marbles in the bag. if there are 9 more green marbles than blue marbles, find the number of green marbles and the number of blue marbles in the bag.

97 + 9 = 106
So that means that there are 106 green marbles
And to find the total
You just add 106 + 97
Which equals 203 total marbles

Let the green marbles be G
and the blue marbles be B
9 + G = B
G+B=97
this brings us to simultaneous equation
G = B-9 (using eq.1)
sub into eq2
B-9+B=97
2B=106
B=53
if there are 53 blue marbles in the bag
therefore there are 44 Green marbles

38+105= 143, 39+104=143, and you will find then adding the numbers on opposite sides, moving inwards yields the answer 138 every time. because of this, you’re going to multiply 138 times the number of pairs, which is 34. therefore, 34*138= 4692(i’m sorry if it’s the wrong numbers, but it’s the right concept)