Question

Resolva as equações. A)2-3×=-9-4× B) 350×500=100×+750 C)×+5,41=3,87 D) 3(2×-1)=-2(×+3) E) 4 (×+10)-2 (×-5)=0 F) 3,5×+8=2(×+7)

Answer 1

2-3x=-9-4x
-3x+4x=-9-2
1x=-11
x=-11/1
x=-11

350x+500=100x+750
350x-100x=750-500
250x=250
x=250/250
x=1

x+5,41=3,87
x=3,87-5,41
x=-1,54

3(2×-1)=-2(×+3)
3 vezes 2x, 3 vezes o -1= 2 vezes o x, -2 vezes o 3
6x-3=2x-6
6x-2x=-6+3
4x=-3
x=-3/4
x=0,75