Question

Решите уравнения
290 + х =640 -260
84 : х = 6 * 7

Answer 1

290+х = 640 - 260
290 + Х = 380
Х = 380 - 290
Х = 90

Answer 2

290+х=640-260
х=640-260-290
х= 90
_____________
84:х=6*7
84:х=42
х=2