2a+2a-7b+7b =4a
7b-10 = -3
cosits 7B lol:-)
It is: 19b+7b = 26b
7b + 15= -34 First, 7b + 15 - 15 = -34 - 15 So, 7b = -49 Then, 7b/7 = -49/7 And finally, b = -7 So b = -7
7b-7 = 0
(-a-7b+5)4ab
5 - 7b + 6 = -24 is a linear equation in one variable. 11 - 7b = -24 Adding -11 to both sides 11 - 7b + (-11) = -24 + (-11) 11 - 7b - 11 = -24 - 11 -7b = -35 Dividing both sides by -7 -7b/(-7) = -35/(-7) b = 5
9
No. 7b - 2b = 5b
What is the answer of (3a+7b) (3a-7b)?
6a + (7b - 4a - 8b) = (6a - 4a) + (7b - 8b) = 2a - b