Answer:
A
Step-by-step explanation:
y-x=1 so to solve for x
-x = -y + 1
x = (y - 1) so A is incorrect because it substitutes (y +1) for x
17x + 8
4(3x + 2) + 5x
12x + 8 + 5x
73050
20*3652.5
x= -17
-7-17=2x+10
subtract -7 to -17 but since both are negatives you do addition.
-24=2x+10
add 24 from both sides and put 2x as a negative
-2x=34
divide both sides by -2
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