Question

Реши уравнение.

(630-×)+210=500
(×+190)-370=330

Answer 1

(630-х)+210=500
630-х=290
х=630-290
х=340

(×+190)-370=330
х+190=700
х=700-190
х=510

Answer 2

630-x=500-210
630-x= 290 
x= 630- 290
x= 340