Question

240+х=735* 6 4020:х=2563-2553

Answer 1

240+х = 735 *6
240+х=4410
х=4410-240
х=4170
----
проверка
240+4170=735*6
4410=4410

4020/х=2563-2553
4020/х=10
х=4020/10
х=402
----
проверка
4020/402=2563-2553
10=10