Solve for a, b, c, d
d=96
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c=5\times 15+3\times 7
Consider the third equation. Insert the known values of variables into the equation.
c=75+21
Do the multiplications.
c=96
Add 75 and 21 to get 96.
d=96
Consider the fourth equation. Insert the known values of variables into the equation.
a=15 b=7 c=96 d=96
The system is now solved.
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