Solve for x, y, z, a
a=0
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7x+6-0x=16
Consider the first equation. Multiply 0 and 2 to get 0.
7x+6-0=16
Anything times zero gives zero.
7x+6=16
Subtract 0 from 6 to get 6.
7x=16-6
Subtract 6 from both sides.
7x=10
Subtract 6 from 16 to get 10.
x=\frac{10}{7}
Divide both sides by 7.
x=\frac{10}{7} y=0 z=0 a=0
The system is now solved.
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