Answer:
27. x = y + 1/ 4
28. x = y - 2/ 3
29. y = 1/3 x
30. y = x + 6/ 2
Step-by-step explanation:
27. y = 4x - 1
y + 1 = (4x - 1) + 1
y + 1 = 4x - 1 + 1
28. 3x - y + 2 = 0
(3x - y + 2) + ( y - 2) = y - 2
3x - y + 2 + y - 2 = y - 2
29. y = x/3
y + ( - x/3) = x/3 + ( -x/3)
y - x/3 = x/3 - x/3
30. x - 2y = -6
(x - 2y) - ( -x ) - 6 + ( - 6)
x - 2y - x = - 6 - x
not sure
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Answers & Comments
Answer:
27. x = y + 1/ 4
28. x = y - 2/ 3
29. y = 1/3 x
30. y = x + 6/ 2
Step-by-step explanation:
27. y = 4x - 1
y + 1 = (4x - 1) + 1
y + 1 = 4x - 1 + 1
28. 3x - y + 2 = 0
(3x - y + 2) + ( y - 2) = y - 2
3x - y + 2 + y - 2 = y - 2
29. y = x/3
y + ( - x/3) = x/3 + ( -x/3)
y - x/3 = x/3 - x/3
30. x - 2y = -6
(x - 2y) - ( -x ) - 6 + ( - 6)
x - 2y - x = - 6 - x
not sure