-13x = 52
x = -4
Check: -13*-4 = 52
it equals 13X.
x + 13x + 10x = 50 - 6
7 + 13x = -9 ie 13x = -9 - 7 x = -16/13 or "Minus one and three thirteenths"
13x
x2 + 13x = -30 ∴ x2 + 13x + 30 = 0 ∴ (x + 3)(x + 10) = 0 ∴ x ∈ {-3, -10}
13x
it equals 13X.
13x = 91To solve for x, divide both sides of the equation by 13.13x/13 = 91/13x = 91/13 = 7
x + 13x + 10x = 50 - 6
x = -1.
7 + 13x = -9 ie 13x = -9 - 7 x = -16/13 or "Minus one and three thirteenths"
It is a straight line equation
13x
That equation represents only one line. y - 11 = 13x - 7 y = 13x + 4 The slope is 13.
x2 + 13x = -30 ∴ x2 + 13x + 30 = 0 ∴ (x + 3)(x + 10) = 0 ∴ x ∈ {-3, -10}
42 + x2 = 13x ∴ x2 - 13x + 42 = 0 ∴ (x - 6)(x - 7) = 0 ∴ x ∈ {6, 7}
That equation represents only one line. y - 11 = -13x - 7 y = -13x + 4 The slope is -13.