Answer:
Step-by-step explanation:
X>X
-4+X>-2+X
Answer:
x= 7, y= -7 or (7, -7)
Step-by-step explanation:
3x-y=28
3x+y=14
because the y is opposite of each other in both equations you can cancel them out
3x=28
3x=14
next you add 3x to 3x, then 28 to 14 and get...
6x=42
next divide both sides by 6 and you get your answer for x...
x=7
now you must solve for y and you do this by substituting what you found for x in one equation it doesn't matter which because you'll get the same answer but you can check for both to make sure...
3(7)+y=14
21+y=14
y=-21+14
y=-7
Answer:
x=5
Step-by-step explanation:
8x − 8 = 4x + 12
8x - 4x= 12 + 8
4x=20
x=20/4
x=5
478 adults and 3 children?
