Answer:
The distributive property of multiplication
Step-by-step explanation:
<u>explanation</u>:-
The distributive property of multiplication states that when a number is multiplied by the sum of two numbers, the first can be distributed to both of those numbers and multiplied by each of them separately,then adding the two products together for the same result as multiplying the first number by sum.
a(b+c) = a.b + a.c
so -2 ( -3+7) = -2(-3) + (-2)(7)
-8 = 6 -14
-8 = - 8
give data we will use distributive property of multiplication
Answer:
Sure what do you need?
Step-by-step explanation:
1] y - 3x = -8
[2] y + 9x = 4
-3x + y = -8 9x + y = 4
Solve equation [2] for the variable y
[2] y = -9x + 4
// Plug this in for variable y in equation [1]
[1] (-9x+4) - 3x = -8
[1] - 12x = -12
// Solve equation [1] for the variable x
[1] 12x = 12
[1] x = 1
// By now we know this much :
y = -9x+4
x = 1
// Use the x value to solve for y
y = -9(1)+4 = -5
{y,x} = {-5,1}
X = 26 because all the angles in a triangle add up to 180.
