Answer:
Review your notes, make flashcards, go back to your textbook and solve problems you haven't solved. Just keep doing practice problems
Multiply the first equation by -1
-3x-y=-4
2x+y=5
Add them up
-x=1
So x=-1
And y=7
So the first option is correct
A
the word 'of' means to multiply
0.45 × 80 = 36
57 degrees
Step-by-step explanation:
because it is the same as the other side
