Question

a)2-3x=-9-4 b)350x-500=100x+750 c)x+15,41=3,87 d)3(2x-1)=-2(x+3) e)4(x+10)-2(x-5)=0 f)3,5x+8=2(x+7) me ajudem

Answer 1

a) 2-3x=-9-4
-3x=-9-4-2
-3x=-15.(-1)
3x=15
x=15/3
x=5
b) 350x-500=100x+750
350x-100x=750+500
250x=1250
x=1250/250
x=5
c) x+15,41=3,87
x=3,87-15,41
x=-11,54
d) 3(2x-1)=-2(x+3)
6x-3=-2x-6
6x+2x=-6+3
8x=-3
x=-3/8
e) 4(x+10)-2(x-5)=0
4x+40-2x+10=0
4x-2x=0-10-40
2x=-50
x=-50/2
x=-25
f) 3,5x+8=2(x+7)
3,5x+8=2x+14
3,5x-2x=14-8
1,5x=6
x=6/1,5
x=4