Question

Solve 7x + 3 = 8x –9.​

Answer 1

Answer:

x=12

Step-by-step explanation:

7x+3=8x-9

3+9=8x-7x

12=1x

x=12

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Answer 2

Answer:

Hence, the value of the expression is 12.

Step-by-step explanation:

In context to questions asked

We have to determine the value of the given expression,

Here we will use the transposition method.

The given expression,

$7x + 3 = 8x -9$

Now, subtract both sides by $3$:

=> $7x + 3-3 = 8x -9-3$

=> $7x = 8x -9-3$

Subtract the numbers,

=> $7x = 8x -12$

Subtract both sides by $8x$,

=> $7x -8x= 8x -12-8x$

=> $-x = -12$

Divide both sides by $-1$,

=> $x = 12$