Respuesta :

nobillionaireNobley
7(a - 10) = 13 - 2(2a + 3)
7a - 70 = 13 - 4a - 6 = 7 - 4a
7a + 4a = 7 + 70
11a = 77
a = 77/11 = 7
a = 7.
calculista

Answer:

[tex]a=7[/tex]

Step-by-step explanation:

we have

[tex]7(a-10)=13-2(2a+3)[/tex]

Solve for a

[tex]7a-70=13-4a-6[/tex]

Group terms that contain the same variable and move the constants to the other side

[tex]7a+4a=13-6+70[/tex]

Combine like terms

[tex]11a=77[/tex]

Divide by [tex]11[/tex] both sides

[tex]a=7[/tex]