What does 23+ n = 29 mean

1- identificar select the category that corresponds to each term. january 23 11: 59 pm unlimited attempts remaining grade settings 276-279 vocabulary list modelo fiesta quinceañera casada adolescencia viudo juventud navidad niñez vejez aniversario de bodas divorciado madurez cumpleaños soltera

Explain how you do each step what term makes it inconsistent y=2x - 4 ?

When using the linear combination metho e linear combination method to solve a system of linear equations, the four options are: