Answer:
7x-7=y
Step-by-step explanation:
5x+7y=10
5x-10=10-7y-10
5x-10=-7y
(1/7)5x-10=7y(1/7)
5x/35-10/70=y
7x-7=y
<em>Sana</em><em> </em><em>maka</em><em>tulong</em><em> </em>
Since that is a triangle the expression would be b x h / 2. So 12*12 = 144 / 2 = 72. The answer is 72.
I had that same answer, its on google just search it up.