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Gnom [1K]
3 years ago
9

7(r − 1) = 6(r + 1) please show work

Mathematics
2 answers:
tatuchka [14]3 years ago
4 0

Answer: r−13

Step-by-step explanation:     Step 1.  (7 • (r - 1)) -  6 • (r + 1)

                                                Step 2.  7 • (r - 1) -  6 • (r + 1)

DerKrebs [107]3 years ago
3 0

Answer:

r=13

Step-by-step explanation:

7r-7=6r+6

7r-7+7=6r+6+7

7r=6r+13

7r-6r=6r+13-6r

r=13

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Hi!

<h3>Use the distribution property</h3>

1.4t — 0.4 * t - 0.4 * —3.1 = 5.8

1.4t — 0.4t - 1.24 = 5.8

<h3>Simplify</h3>

1t - 1.24 = 5.8

<h3>Add 1.24 to both sides</h3>

1t - 1.24 + 1.24 = 5.8 + 1.24

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<h2>The answer is t = 7.04</h2>

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