Answer:
1x+2=8+-1
1+2=7
(x+2) + (-2) = 7 (-2)
x + 2-2=7-2
x=5
Step-by-step explanation:
- Number 1 as a factor, does not need to be explicitly written.
- In our example, the above transformation has been applied once.
- In order to solve this linear equation, we need to group all the variable terms on one side, and all the constant terms on the other side of the equation.
- In our example, term 2 , will be moved to the right side.
- Notice that a term changes sign when it 'moves' from one side of the equation to the other.
- We need to get rid of expression parentheses.
- If there is a negative sign in front of it, each term within the expression changes sign.
- Otherwise, the expression remains unchanged.
- In our example, there are no negative expressions.
- Numerical terms in this expression have been added.