a = 3
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∙ 13y agoa = 20
depends what 'a' =
If a + b = 6, what is the value of 3a + 3b?
3a - 7 = -28 Therefore, 3a = -21 a = -21/3 Therefore, a = -7
a + a + a - 2a = 3a - 2a = a
a = 20
9a+21 3(3a+7)
depends what 'a' =
3a = 21 Therefore, a = 21/3 a = 7
If a + b = 6, what is the value of 3a + 3b?
3a - 7 = -28 Therefore, 3a = -21 a = -21/3 Therefore, a = -7
a + 3a + 5a = 180 9a =180 a = 20
2a + 3a + 4 = 5a + 4
1
a + a + a - 2a = 3a - 2a = a
-21 = 9a - 15 - 3a -6 = 6a -1 = a
3a plus 4 equals 3a +4. You can not combine the two parts because they are not like terms so there is no way to simplify this.