7a - 4 + 2a = 3a - 2
9a - 4 = 3a - 2
6a = 2
a = ?
7a - 4 + 2a= 3a - 2
I tired it and couldn't come out with a answer that fit when I checked it
2 answers
add like terms on same sides
7a - 4 + 2a --> 7a+2a = 9a
equals
9a - 4 = 3a - 2
combine like terms from opposite sides by adding or subtracting on both sides
9a - 4 + 4 = 3a - 2 + 4
equals
9a = 3a + 2
9a - 3a = 3a - 3a + 2
equals
6a = 2
then divide out the last number to get "a" by itself
6a/6 = 2/6
a = 2/6 --> 1/3
7a - 4 + 2a --> 7a+2a = 9a
equals
9a - 4 = 3a - 2
combine like terms from opposite sides by adding or subtracting on both sides
9a - 4 + 4 = 3a - 2 + 4
equals
9a = 3a + 2
9a - 3a = 3a - 3a + 2
equals
6a = 2
then divide out the last number to get "a" by itself
6a/6 = 2/6
a = 2/6 --> 1/3
2 answers