Question

Решите уравнение: (5а+500)*5=4500

Answer 1

(5a+500)*5=4500;
5a+500=900;
5a=400;
a=80.

Answer 2

(5а + 500) * 5 = 4500
25а + 2500 = 4500
25а = 4500 - 2500
25а = 2000
а = 80