Solve for b, c, d
d=36
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c=2\left(4+2\times 7\right)
Consider the second equation. Insert the known values of variables into the equation.
c=2\left(4+14\right)
Multiply 2 and 7 to get 14.
c=2\times 18
Add 4 and 14 to get 18.
c=36
Multiply 2 and 18 to get 36.
d=36
Consider the third equation. Insert the known values of variables into the equation.
b=7 c=36 d=36
The system is now solved.
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