126k views
1 vote
Please help me with this i really need help.

Please help me with this i really need help.-example-1

1 Answer

5 votes

Answer:

Explanation:

We are given an equation( a math expression with an equal sign)

5+x-12=x-7

First things first, we need to combine any like terms(add/subtract) on the same side

A term is a number, variable, that is separated by a plus symbol or minus symbol.

Here 5 and -12 are similar terms so let combine them

5-12=-7 So the equation become

x-7=x-7

Step 2: Notice how the left hand and right-hand side are the same thus we do not need to solve this equation. But let do the work instead

x-7=x-7

x=x

Thus, the solution is All Real Numbers

Part B:

Substitute -4 for x in the original equation.

5+(-4)-12=-4-7

1-12=-4-7

-11=-11

Thus, the equation is true here.

Substitute 0 for x in the original equation

5+0-12=0-7

-7=-7

Equation is True Here

Try 5 for x as well

5+5-12=5-7

10-12=5-7

-2=-2

So equation is true as well.

Let me know if you have any questions or concerns.

User Sachin Nikumbh
by
8.4k points

No related questions found

Welcome to QAmmunity.org, where you can ask questions and receive answers from other members of our community.