solve for b.\n9 = -7 + 2(1 + b)\nb = \nsubmit

Answer:

8

Explanation:

Step1: Add 7 to both sides

$9 + 7 = 2(1 + b)$
$16 = 2(1 + b)$

Step2: Divide by 2

$\frac{16}{2} = 1 + b$
$8 = 1 + b$

Step3: Subtract 1

$b = 8 - 1$
$b = 7$? Wait, correction: Step1 is 9+7=16, Step2 16/2=8=1+b, so b=8-1=7? No, wait 16/2=8=1+b → b=8-1=7? Wait no, 2(1+b)=16 → 1+b=8 → b=7. Oh, my mistake earlier. Final answer is 7. Wait no: Let's recheck.
Original equation: 9 = -7 + 2(1+b).
Add 7: 16 = 2(1+b).
Divide by 2: 8 = 1 + b.
Subtract 1: b=7. Yes, correct. So answer is 7.

Answer:

7

Explanation:

Step1: Add 7 to both sides

$9 + 7 = 2(1 + b)$
$16 = 2(1 + b)$

Step2: Divide both sides by 2

$\frac{16}{2} = 1 + b$
$8 = 1 + b$

Step3: Subtract 1 from both sides

$b = 8 - 1$
$b = 7$