The idea here is to combine terms that have the same variable (or, in more complicated cases, the same combination of variables). For example, 3a + 2a is the same as 5a.
-4 + 10 + 6a - 2a + 3 9 + 4a
2a*4b*(-3c) = ? 2 * 4 * -3 * a * b * c = ? -24abc
4
It is 14x+4 simplified
7a + 4 = 5a + 7 7a = 5a + 3 2a = 3 a = 3/2
2a + 3a + 4 = 5a + 4
5a + 3 = 7a - 1 add 1 to both sides 5a + 4 = 7a so 4 = 2a as 5a + 2a = 7a 4 = 2a = 2 x 2 so a = 2 Check: then 5a + 3 = 10 + 3 = 13 and 7a - 1 = 14 - 1 = 13
7
2a-8+4=45-5a 2a-4=45-5a 2a-4+4=45+4-5a 2a+5a=49-5a+5a 7a=49 / by 7 = A=7
2a + 3 - 9b - a - 7 Bring like terms together: = 2a - a - 9b + 3 - 7 Combine like terms: = a - 9b - 4
The idea here is to combine terms that have the same variable (or, in more complicated cases, the same combination of variables). For example, 3a + 2a is the same as 5a.
It looks like you've taken 'a' away from '7a' three times, so you probably have 4 of them left.
7a
555
-4 + 10 + 6a - 2a + 3 9 + 4a
a/7 + a/4 = 4a/28 + 7a/28 = 11a/28