Решите уравнения 290+х=640-260))

Question

Решите уравнения 290+х=640-260))

Answer 1

290 + x = 640 - 260 
290 + x = 380 
x = 380 - 290 
x = 90

Comments

290 + x = 640 - 260
290 + x = 380
x = 380 - 290
x = 90

Answer 2

290+х=640-260
х=640-260-290
х=90