Answer:
3(2x-2)-4(x+7)+20 = -8 => x = 13
Step-by-step explanation:
3(2x-2)-4(x+7)+20 = -8
6x-6-(4x+28)+20 = -8
6x-6-4x-28-20 = -8
6x-4x-6-28 = -8
2x- 34 = -8
2x -34 +34 = -8 +34
2x = 26
x= 13
Answer:
One solution: (2.5,0)
Step-by-step explanation:
We can use substitution for the solution. Substitute y=2x-5 to -8x-4y=-20 so that you end up with -8x-8x+20=-20. Next you want to add like terms which will be -16x+20=-20, next you want isolate x by subtracting 20 from both sides and leaves you with -16x=-40. Divide -16 on both sides to fully isolate x and will leave you with x=2.5. Now substiture in 2.5 for x in y=2x-5 to get y=2(2.5)-5 which will then lead to y=0.
The answer would be 2a-7 because a negative times a negative is a postive so -(-2a) is 2a and negative times a postive is a negative so -(7) is -7
Answer:
a
Step-by-step explanation:
it goes 8 units over and its going up 7