SOLUTION: Directions: Justify each statement with a property of equality or property of congruence. Question: If x+y=12 and y=4 then x+4=12

Algebra.Com
Question 1150975: Directions: Justify each statement with a property of equality or property of congruence.
Question: If x+y=12 and y=4 then x+4=12

Answer by josgarithmetic(39618)   (Show Source): You can put this solution on YOUR website!
Substitution
RELATED QUESTIONS

Directions: Justify each statement with a property of equality or property of congruence. (answered by MathLover1)
Name the property that justifies this statement: If AB = BA, then segment AB is congruent (answered by MathLover1)
If x = y+3 and y+3=10, then x=10. Name the property of equality (answered by jim_thompson5910)
Select the correct reason for the numbered statement. prove if a/b = a/b and c=0 ,... (answered by josgarithmetic)
If x=y, then y=x, what property of equality is... (answered by Theo)
Name the property that justifies this statement: If 39 = 3x, then 3x = 39.... (answered by cleomenius)
Select the property of equality used to arrive at the conclusion. If 5x = 20, then x (answered by jim_thompson5910)
4[2x-4]+9=8 Solve the equation for x. Justify each statement with a property or... (answered by tommyt3rd)
4[2x-4]+9=8 Solve the equation for x. Justify each statement with a property or... (answered by tommyt3rd)