Question

a)12x-10x-4=3 b)2,5×-5-1,5×=1 c)3,5×+8=2×+14 d)18×+12-8=-2 e)5×+15+4×+2=8 me ajudem o mais rápido possível por favor

Answer 1

a) 12x-10x-4=3 --> 2x=3+4 --> 2x=7 --> x=7/2

b) 2,5x-5-1,5x=1 --> 2,5x-1,5x=1+5 --> x=6

c) 3,5x+8=2x+14 --> 3,5x-2x=14-8 --> 1,5x=6 --> x=6/1,5 -->x=4

d)18x+12-8=-2 --> 18x=-2-12+8 --> 18x=-6 --> x=-6/18

e) 5x+15+4x+2=8 --> 5x+4x=8-15-2 --> 9x=-9 --> x=-9/9 --> x=-1