Answer:
x=10
Step-by-step explanation:
The two angles form a straight line so they add to 180 degrees
7x-3 + 12x-7 = 180
Combine like terms
19x-10 = 180
Add 10 to each side
19x-10+10 = 180+10
19x = 190
Divide by 19
19x/19 = 190/19
x= 10
ANSWER

EXPLANATION
We have that there are 12 after school programmes and each one got an equal number of packages.
To find the number of fruit snacks that each received, we have to find the total number of fruit snacks.
The total number of fruit snacks can be found by multiplying the number of boxes of each flavor by the number of packages in each box, then adding them up:

Now, to <em>find the number of fruit snacks that each received</em>, divide by 12:
Katie had 4 pots of regular
The equation would be
g + (g + 9) = 45
2g + 9 = 45
- 9
2g = 36
÷ 2
g = 18
18 + 9 = 27
Girls: 18
Boys: 27
Hope this helps! Let me know if you have any questions :)