28z+120=260 28z+120 =260- 28z= z= z=

Question

28z+120=260

28z+120 =260-

28z=

z=

z=

Answer 1

28z+120=260

28z=260-120

28z=140

z=140/28

z=5

Проверка:

28X5+120=260

260=260

Ответ: 5.

Answer 2

28z+120=260

 28z=260-120

28z=140

z=140 : 28

z=5