Answer:
x =
<u><em>OR</em></u>
x =
Step-by-step explanation:
<em>Cross Multiplying</em>
x × 8 = 5 × 3
8x = 15
<em>Dividing both sides by 8</em>
x =
<u><em>OR</em></u>
x =
A-b=21
5a-2b=18
We can use substitution here. Take the first equation and solve for A. (Picking this one because it's easy)
a = 21+b
Plugin to the second equation:5(21+b)-2b=18
Simplify: 105 + 5b - 2b = 18
Simplify: 105 + 3b = 18
Subtract both sides: 3b = 18-105
Simplify: 3b = -87
Divide: b = -29
Plug back into the first: a=21+b
a = 21 - 29
a = -8
Option D
Answers 1. x=3 2. x=-3 3. x=-12 4. x=5 5. x<-5 6.x=-4 All you do is do the opposite opperation
Answer:
C
Step-by-step explanation:
Hope this helps have a great day. :))))
The Answer is 9/13
Solving Steps :
3(2x-3)=-7x
6x-9=-7x
6x+7x=9
13x=9
X=9/13