Respuesta:
Explicación paso a paso:
[tex]a) \: \: 7 + 4 + x - 6 = 5 + 4 \\ x = 5 + 4 + 6 - 4 - 7 \\ \red { \boxed{x = 4}}[/tex]
Comprobamos:
[tex]7 + 4 + \red{4} - 6 = 5 + 4 \\ \boxed{ 9 = 9}[/tex]
[tex]b) \: \: 12 - 8 + y - 3 = 21 + 4 \\ y = 21 + 4 + 3 + 8 - 12 \\ \green{ \boxed{y = 24}}[/tex]
[tex]12 - 8 + \green{24} - 3 = 21 + 4 \\ \boxed{25 = 25}[/tex]
[tex]c) \: \: 3 + 2a - 8 - 5 = 25 + 3 \\ 2a = 25 + 3 + 5 + 8 - 3 \\ 2a = 38 \\ a = 38 \div 2 \\ \blue{ \boxed{a = 19}}[/tex]
[tex]3 + 2 \times \blue{19} - 8 - 5 = 25 + 3 \\ 3 + 38 - 8 - 5 = 28 \\ \boxed{28 = 28}[/tex]
" Life is not a problem to be solved but a reality to be experienced! "
© Copyright 2013 - 2024 KUDO.TIPS - All rights reserved.
Verified answer
Respuesta:
¡Hola!
Explicación paso a paso:
[tex]a) \: \: 7 + 4 + x - 6 = 5 + 4 \\ x = 5 + 4 + 6 - 4 - 7 \\ \red { \boxed{x = 4}}[/tex]
Comprobamos:
[tex]7 + 4 + \red{4} - 6 = 5 + 4 \\ \boxed{ 9 = 9}[/tex]
[tex]b) \: \: 12 - 8 + y - 3 = 21 + 4 \\ y = 21 + 4 + 3 + 8 - 12 \\ \green{ \boxed{y = 24}}[/tex]
Comprobamos:
[tex]12 - 8 + \green{24} - 3 = 21 + 4 \\ \boxed{25 = 25}[/tex]
[tex]c) \: \: 3 + 2a - 8 - 5 = 25 + 3 \\ 2a = 25 + 3 + 5 + 8 - 3 \\ 2a = 38 \\ a = 38 \div 2 \\ \blue{ \boxed{a = 19}}[/tex]
Comprobamos:
[tex]3 + 2 \times \blue{19} - 8 - 5 = 25 + 3 \\ 3 + 38 - 8 - 5 = 28 \\ \boxed{28 = 28}[/tex]