Question

Alguien me ayuda en sto

Answer 1

Respuesta:

1) 9 , 2) 19 , 3) 27

Explicación paso a paso:

PROBEMA 1:

x+7 + 2x-3 + x = 40

4x + 4 = 40

4x = 36

x = 36/4 = 9

PROBLEMA 2:

3x+10 + x+4 = 90

4x + 14 = 90

4x = 76

x = 76/4 = 19

PROBLEMA 3:

3x-20 = x+34

2x = 54

x = 54/2 = 27

PROBLEMA 6:

4x-5 → 4(2)-5 = 3 ---------- 4(-3)-5 = -17

3x+5 → 3(2)+5 = 11 ---------- 3(-3)+5 = -4

-7x-6 → -7(2)-6 = -20 ---------- -7(-3)-6 = 15