s = -2 -4r
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4r+3 = 3-2 4r = 3-3-2 4r = -2 Divide both sides of the equation by 4 to find the value of r: r = - 1/2
(r + 2)(r + 2)
-2 - 2r or -2(1 - r)
you need 2 equations to solve for 2 variables
Solving by the elimination method: x = 7 and y = 2