Respuesta :

Answer:

a = -8

Step-by-step explanation:

to solve this expression 131=11-15a  you will simply combine the terms and then evaluate for the value of a

131=11-15a

collect or combine the like terms

131 - 11 = -15a

120 = -15a

divide both sides by  the coefficient of a which is -15

120/-15 = -15a/-15

-8 = a

a = -8

therefore the value of a in the expression 131=11-15a is equals to -8