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STatiana [176]
2 years ago
5

What does z equal in 4z+5=-3z-8

Mathematics
1 answer:
Mars2501 [29]2 years ago
4 0
The first step to solve this equation is to move the variable to the left side of the equation and change its sign
4z + 3z + 5 = -8
Move the constant to the right side of the equation and change its sign
4z + 3z = -8 - 5 
Collect the like terms on the left side of the equation
7z = -8 - 5
Calculate the difference
7z = -13
Lastly,, divide both sides of the equation by 7 to find out what z is
z = -\frac{13}{7}
This means that z in your equation is -\frac{13}{7},, or 1\frac{6}{7} when simplified.
Let me know if you have any further questions
:)
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Complete question :

Lilian purchased a violin form smash music stores. It regularly sold for $670, but wa son slaw for 10% off. She also had to pay 8% sales tax. She bought it on the installment plan and paid 15% of the total cost with tax as a down payment. Her payments were $58 per month for one year. What is her sales tax?

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