Question

(80-х)•5+20=370решить

Answer 1

80-х=370-20
80-х=350
80-х=350:5
80-х=70
х=80-70
х=10
(80-10)•5+20=370

Answer 2

(80-х)×5=370-20
(80-х)×5=350
80-х=350÷5
80-х=60
х=80-60
х=20