Respuesta :
Respuesta:
Explicación paso a paso:
1) x - x/3 = 70
10x = 210
x = 21
2) x - x/3 = 2x - 3
2x = 6x - 9
9 = 4x
9/4 = x
3) x - 8 = 2x - 32
32 - 8 = x
24 = x
4) x + (x+1) = 157
2x = 156
x = 78
5) a + (a+2) = 36
2a = 34
a = 17
a+2 = 19
Respuesta:
Explicación paso a paso:
1) x - x/3 = 70
10x = 210
x = 21
2) x - x/3 = 2x - 3
2x = 6x - 9
9 = 4x
9/4 = x
3) x - 8 = 2x - 32
32 - 8 = x
24 = x
4) x + (x+1) = 157
2x = 156
x = 78
5) a + (a+2) = 36
2a = 34
a = 17
a+2 = 19