asjessehills2000
25.01.2020 •
Mathematics
Brian solved the following equation:
6(3x – 5) = 4(4x + 2)
step work justification
1 18x – 30 = 16x + 8
2 2x – 30 = 8
3 2x = 38
4 x = 19
which of the following has all correct justifications brian used to solve this equation?
1. associative property of addition. 2. subtraction property of equality. 3. addition property of equality. 4. multiplicative inverse.
1. associative property of addition. 2. subtraction property of equality. 3. addition property of equality. 4. division property of equality.
1. distributive property. 2. subtraction property of equality. 3. addition property of equality. 4. division property of equality.
1. distributive property. 2. subtraction property of equality. 3. addition property of equality. 4. multiplicative property of equality.
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Ответ:
The answer is C
Step-by-step explanation:
1. Distributive property. 2. Subtraction property of equality. 3. Addition property of equality. 4. Division property of equality.
6(3x - 5) = 4(4x + 2) Given
(6)(3x) + (6)(-5) = (4)(4x) + (4)(2) Distributive property
18x - 30 = 16x + 8
18x - 16x - 30 = 16x - 16x + 8 Subtraction property of equality
2x - 30 = 8
2x - 30 + 30 = 8 + 30 Addition property of equality
2x = 38
2x : 2 = 38 : 2 Division property of equality
x = 19
Ответ:
around 10 ft
Step-by-step explanation:
Hope this helps