423+12*x=507 448:(123-x)=8 Решите уравнения

Question

423+12*x=507
448:(123-x)=8
Решите уравнения

Answer 1

423+12*x=507  

12x = 507 - 423

12x = 84

x = 84 : 12

x = 7

448:(123-x)=8

123 - x = 448 : 8

123 - x = 56

x = 123 - 56

x = 67

Answer 2

12*x=507-423
12*x=84
X=84/12
X=7