Answer:
b= -x+ y/17
Step-by-step explanation:
1. Subtract 17x from both sides of the equation in order to isolate b on one side.
y -17x= 17b
2. Divide every term by 17 in order to isolate b from any coefficients.
y/17 -17x/17 = 17b/17
3. Simplify
b= -x+y/17
Choice #1) multiplied by 3
-2a + x
Putting values of a = - 2 and x = 7
-2(-2) + 7
4 + 7
= 11
