Answer:
y=4
Step-by-step explanation:
y=2+2/2-1
y=4
3a + 6b = 45
2a - 2b = -12....multiply by 3
----------------
3a + 6b = 45
6a - 6b = - 36 ...(result of multiplying by 3)
---------------add
9a = 9
a = 1
3a + 6b = 45
3(1) + 6b = 45
3 + 6b = 45
6b = 45 - 3
6b = 42
b = 7
solution is : (1,7)
I think what's your trying to say is 419-200? If so it's 219
144 square feet ÷ 12 tiles per row = 12 rows of tiles.
There will be 12 rows of tiles.
