15z+5+6z=0
21z+5=0
z=-5/21
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6z-4z-z = 6-7-4 z = -5
The quotient of 4 and 5 is 4 divided by 5, which equals 0.8. The product of 6 and z is 6z. When the quotient of 4 and 5 (0.8) is added to the product of 6 and z (6z), the expression becomes 0.8 + 6z.
No. It equals 15.
-2 plus 5 equals +3
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