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PIT_PIT [208]
3 years ago
11

After you add both sides by 9. How can you solve for 5z in this equation 5z-3=12

Mathematics
1 answer:
lutik1710 [3]3 years ago
3 0

Answer:

OPTION A: Divide both the sides by 5

Step-by-step explanation:

We are given:  5z - 3 = 12

When we add 9 to both sides we get:

5z - 3 + 9 = 12 + 9

⇒ 5z + 6 = 21

⇒ 5z = 21 - 6 = 15

⇒ 5z = 15

To find the value of z we have to divide both the sides by 5.

i.e., $ \frac{5z}{5} = \frac{15}{5} $

⇒ z = 3.

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