Let's first solve the first equation:
(4×b-16)/2=12(4×b-16)=18×b-32=18×b=4b=5.25
Now, let's plug in the value of b into the second equation:
(2+5.25)/7×8=77.25/7×8=71.0357×8=78.2856=72
Therefore, the value of x is approximately 8.29.
Let's first solve the first equation:
(4×b-16)/2=1
2(4×b-16)=1
8×b-32=1
8×b=4
b=5.25
Now, let's plug in the value of b into the second equation:
(2+5.25)/7×8=7
7.25/7×8=7
1.0357×8=7
8.2856=72
Therefore, the value of x is approximately 8.29.