Question

resolva com r cada inequacão a) 5x+8>-12   , b) 4x+<2 x ,    c) 6 x - 4 > 3x+5 d) 3-5 x < 8 

Answer 1

a) 5x+8>-12 ==> 5x> -12-8==>5x>-20==> x > - 4

b) 4x+<2 x ==>4x-2x<0==.2x < 0 ==> x < 0    

c) 6 x - 4 > 3x+5 ==> 6x-3x > 5 + 4 ==> 3x>9 ==> x > 3

d) 3-5 x < 8 ==> -5x< 8-3==> -5x<5(-1)==>5x> - 5 ==> x > - 1