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Reasons

multiplication property of
given
addition property of equality


distributive property
transitive property
subtraction property of equality
combining like terms

Steps
3(z 4) + 5 = 2z - 2(3-2)
3z
12+5 2z 6+ 2z
3z 7 = 4z - 6
-72-6
-1 =7
Help match these

User Skyel
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1 Answer

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1. Multiplication property of equality: We can multiply both sides of an equation by the same number without changing the equality.
2. Addition property of equality: We can add the same number to both sides of an equation without changing the equality.
3. Distributive property: We can distribute a number to each term inside parentheses.
4. Transitive property: If a = b and b = c, then a = c.
5. Subtraction property of equality: We can subtract the same number from both sides of an equation without changing the equality.
6. Combining like terms: We can combine terms that have the same variable and exponent.

Steps:
1. Distribute -2 to (3-2): -2 * 3 + (-2) * (-2) = -6 + 4 = -2.
2. Simplify both sides: 3(z + 4) + 5 = 2z - 2 + (-2) = 3z + 12 + 5 = 3z + 17.
3. Distribute 2 to (3-2): 2 * 3z + 2 * (-2) = 6z - 4.
4. Simplify both sides: 3z + 17 = 6z - 4.
5. Subtract 3z from both sides: 3z + 17 - 3z = 6z - 4 - 3z.
6. Simplify both sides: 17 = 3z - 4.
7. Add 4 to both sides: 17 + 4 = 3z - 4 + 4.
8. Simplify both sides: 21 = 3z.
9. Divide both sides by 3: 21/3 = 3z/3.
10. Simplify both sides: 7 = z.

By following these steps and applying the mentioned properties, we can find that the solution to the equation is z = 7.

good luck !!
User Jpaljasma
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7.7k points