Question

Resuelvan estas dos ecuaciones raza:
X + 13 + X = 67

X + 2X + 5 = 398

Answer 1

1) X + 13 + X = 67
X + X = 67 - 13
2X = 54
X = 54 : 2
X = 27
2) X - 2X + 5 = 398
X - 2X = 398 - 5
- X = 393
X = - 393