Multiply first equation by 2:
10x + 2y = 18
Subtract the second equation from this so that the 2y terms cancel:
10x - 3x = 18 - 4
7x = 14
x = 2
Plug into first equation to find y:
5(2) + y = 9
10 + y = 9
y = -1
The answer is (2,-1)
<span>Two ways technology can affect the environment is by air pollution and toixc water</span>
a
Step-by-step explanation:
you are trying to divide x by 7 to isolate x. so you divide by 8 on both sides.