Question

Determine o x:

4x-10=2x+2

4x-7=8x-2

2x+1-4x-7

9x+9+3x=15

16x-1=12x+3

3x-2=4x+9

5x-3+x=2x+9

17x-7x=x+18

Ajudem pf ?

Answer 1

4x-10=2x+2
4x -2x= +2 +10
+2x= +12
x= 12/2
x= 6

4x-7=8x-2
4x -8x= -2 +7
-4x = +5 (-1)
+4x = -5
x= -5/4

2x+1=4x-7
2x -4x = -7 -1
-2x = -8(-1)
+2x= +8
x= 8/2
x= 4

9x+9+3x=15
9x +3x = 15 -9
12x= 6
x= 6/12  simplificando por 6
x= 1/2

16x-1=12x+3
16x -12x = +3 +1
4x= 4
x= 4/4
x=1

3x-2=4x+9
3x -4x = 9 +2
-x= 11(-1)
+x= -1

5x-3+x=2x+9
5x +x -2x = 9 +3
6x -2x = 9+3
4x = 12
x= 12/4
x=3

17x-7x=x+18
17x -7x -x = 18
17x -8x = 18
9x = 18
x= 18/9
x=2