Step-by-step explanation:
the answer is a,hope it helps
Answer/explanation
4(3x+5)=-4
You will distribute the four to every term in the parenthesis,
12x+20=-4
Then you will combine like terms
12x+20=-4
-20 -20
12x=-24
Then you will divide 12 to isolate x

Obviously, -24 cancels out and you would get x=-2
2(x-y) - 3(x-2y) = 0
2(x) - 2(y) -3(x) -3(-2y) = 0
2x - 2y - 3x + 6y = 0
-x + 4y = 0
Value of x:
-x = -4y
-x / -1 = -4y / -1
x = 4y
Value of y:
-x + 4y = 0
4y = x
4y / 4 = x / 4
y = x/4
Answer:
(3, 3)
Step-by-step explanation:
The solution of such a system is the ordered pair that is a solution to both equations. To solve a system of linear equations graphically we graph both equations in the same coordinate system. The solution to the system will be in the point where the two lines intersect.
first, distribute -6 to (2b + 1), giving you -12b - 6, and then on the another side of the equation, distribute -2 to (5 + 4b) giving you, -10 - 8b. now we need to put our coefficients on one side so we will add 8b to each side of the equation, giving us -6 = -10 - 8b + 12b, then we will add 10 to both sides of the equation giving us, 10 -6 = -8b +12b, this gives u 4 = 4b. then, you would solve for b, which equals 1.