Set up the equation and solve:
7y - 7 = -105 (next add 7 to each side of the equation)
7y = -98 (next divide both sides by 7 to solve for y)
y = -14 (solution)
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(4, -7)
15y^8 - 7y^3 = y^3(15y^5 - 7)
4x - 7y = 12-7y = -4x + 12y = (4/7)x - (12/7)======================4x - 7y = 124x = 7y + 12x = (7/4)x + 3
10x-7y=-110x+1=7y-2x -10x-1=-25-12x-1=-25-12x=-24x=-24/-12x=210(2)-7y=-120-7y=-121=7y21/7=yy=3
3x + 7y = 3*x + 7*y = 3*6 + 7*4 = 18 + 28 = 46