20.8k views
4 votes
Hello pls help I need to solve this using algebraic proofs

Hello pls help I need to solve this using algebraic proofs-example-1

1 Answer

3 votes

Statement : 2(x+10)=7x-15

Reason : Original equation

Statement : 2x+20=7x-15

Reason : Distribute 2 through the parentheses

Statement : 20=5x-15

Reason : Move the variable to the right-hand side and change its sign and then subtract the like terms

Statement : 35=5x

Reason : Move the constant to the left-hand side and change its sign and subtract the like terms

Statement : 7=x

Reason : Divide both sides of the equation by 5

Statement : x=7

Reason : Change the sides of the equation

User Thomas Shelby
by
6.9k points