Question

me ayudas a relsolverlo por fas​

Answer 1

10x + 1050 = 12500

10x = 12500 - 1050

10x = 11450

x = 11450 / 10

x = 1145

Answer 2

Sería así:
S= 10x+1,050=12,500
S= 10x = 12,500-1,050
S= 10x = 11,450
S= x = 11,450/10
S= x = 1,145

Ahora la comprobación:
S= 10(1,145)+1,050=12,500
S= 11,450+1,050=12,500
S= 12,500=12,500