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