a) (3-2x) - (x-4) - (2x+5)= (3x-4) - (5x +7) 3-2x-x+4-2x-5=3x-4-5x-7 3+4-5+4+7=3x-5x+2x+x+2x 13=3x x=13/3 x=4⅓ b) (4- x)-(2x+3)+(x-4)=-(2x-3)-(x+7) 4-x-2x-3+x-4=-2x+3-x-7 4-3-4-3+7=-2x-x+x+2x-x 1=-x x=-1 c) (4x-5)+(x-7)-(2x-8) =(-3x+4)-(x-6) 4x-5+x-7-2x+8=-3x+4-x+6 -5-7+8-4-6=-3x-x-4x-x+2x -14=-7x x=2 d) -(4-2x)-(2x+-4)=(3x-1)+(2x-5)-(7-3x) -4+2x-2x+4=3x-1+2x-5-7+3x -4+4+1+5+7=3x+2x+3x-2x+2x 13=8x x=13/8 x=1⅝
a) (3-2x) - (x-4) - (2x+5)= (3x-4) - (5x +7) 3-2x-x+4-2x-5 = 3x-4-5x-7 -3x=-13 x=13/3=4 i 1/3 b) (4- x)-(2x+3)+(x-4) = -(2x-3)-(x+7) 4-x-2x-3+x-4=-2x+3-x-7 x=-1 c) (4x-5)+(x-7)-(2x-8) =(-3x+4)-(x-6) 4x-5+x-7-2x+8 = -3x+4-x+6 7x=14 x=2 d) -(4-2x)-(2x+-4)=(3x-1)+(2x-5)-(7-3x) -4+2x-2x+4 = 3x-1+2x-5-7+3x 8x=13 x=13/8 = 1 i 5/8