7a + 10 = 2a 7a = 2a -10 5a = -10 a = -2
-7a - 10 = 20 -3a-7a + 3a= 20 + 10-4a=30divide by negative 4a=-7.5-7x-7.5=52.5-10=42.5-3x-7.5=22.520+22.5=42.5
4a+3a-4 = 10 4a+3a = 10+4 7a = 14 a = 2
a + 18 = 7a a-a +18 = 7a-a 18 = 6a 18/6 = 6a/6 3 = a 3=a
It is: 9a-a-a = 7a
7a+10=2a 7a+10-2a=0 5a+10=0 5a=-10 a=-2
7a + 10 = 2a 7a = 2a -10 5a = -10 a = -2
7a=2(-10)........................................answer is 20/7
-7a - 10 = 20 -3a-7a + 3a= 20 + 10-4a=30divide by negative 4a=-7.5-7x-7.5=52.5-10=42.5-3x-7.5=22.520+22.5=42.5
a/5 + a/2 = 14/2 2a/10 + 5a/10 = 7 7a/10 = 7 7a = 70 a = 10
4a
9a-a = 19+7a 8a = 19+7a 8a - 7a = 19 + 7a - 7a 1a = 19 a = 19
555
4a+3a-4 = 10 4a+3a = 10+4 7a = 14 a = 2
(7a=3)=(-a-5)=16
The variable is a. You can solve for it, like this: 8a - 9 = 7a - 6 8a = 7a + 3 8a - 7a = 3 a = 3
a + 18 = 7a a-a +18 = 7a-a 18 = 6a 18/6 = 6a/6 3 = a 3=a