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3 years ago

Solve the equation and justify each step. 8.2 - 9 = 7x + 6 - 2x

Mathematics

1 answer:

Snezhnost [94]3 years ago

8 0

Answer:

x = 5

Step-by-step explanation:

8x-9=7x+6-2x

We move all terms to the left:

8x-9-(7x+6-2x)=0

We add all the numbers together, and all the variables

8x-(5x+6)-9=0

We get rid of parentheses

8x-5x-6-9=0

We add all the numbers together, and all the variables

3x-15=0

We move all terms containing x to the left, all other terms to the right

3x=15

x=15/3

x = 5

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