Solve for x, y, z, a
a=77
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74+x-7\times 3=2
Consider the first equation. Multiply 2 and 37 to get 74.
74+x-21=2
Multiply 7 and 3 to get 21.
53+x=2
Subtract 21 from 74 to get 53.
x=2-53
Subtract 53 from both sides.
x=-51
Subtract 53 from 2 to get -51.
x=-51 y=77 z=77 a=77
The system is now solved.
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