3 years ago

What is the value of x in the equation 8 + 4 = 2 (x minus 1)?

Mathematics

2 answers:

Tanzania [10]3 years ago

6 0

Answer:

x = 7

Explanation:

8 + 4 = 2 (x − 1)

Simplify both sides of the equation

8 + 4 = 2(x − 1)

8 + 4 = (2)(x) + (2)(−1) (Distribute)

8 + 4 = 2x + −2

(8 + 4) = 2x − 2 (Combine Like Terms)

12 = 2x − 2

Flip the equation

2x − 2 = 12

Add 2 to both sides

2x − 2 + 2 = 12 + 2

2x = 14

Divide both sides by 2

2x / 2 = 14 / 2

x = 7

givi [52]3 years ago

3 0

Answer:

Step-by-step explanation:

8+4 = 2(x-1)

12 = 2(x-1)

6 = x-1

x = 7

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