They are three algebraic terms, separated by spaces.
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It is: 30x+80 -8x = 22x+80 when simplified
(3x - 2)(x + 8)
2x = 3x - 22x - 3x = -2-x = -2x = 2Therefore, the number is 2.
It is 22x - 64.
3x - y = -4 3x - y = 0 Those lines do not intersect. They are parallel. You can demonstrate by solving either of them for one of the two variables, then plugging it's value into the other: 3x - y = -4 ∴y = 3x + 4 Now substitute: 3x - y = 0 ∴ 3x - (3x + 4) = 0 ∴ 3x - 3x - 4 = 0 ∴ -4 = 0 This result is obviously incorrect, indicating that the lines do not intersect.