Question

Determine o valor de X nas equações: C)1,2•(2x+3)=0 e d)0,8x-2x=0,8x-1,74

Answer 1

C) 1,2 (2x+3)=0
2,4×+3,6=0
2,4x=-3,6
x=-3,6/2,4
x=1.5

d) 0,8x-2x=0,8x-1,74
0,8x-2x-0,8x=-1,74
-2x=-1,74 (-1)
2x=1,74
x=1,74/2
x=0,87