Answer:
Step-by-step explanation:
2x+1=5
-1
2x=4/2
x=2
Answer:
x=45
Step-by-step explanation:
2x+45+x=180 since it is on a straight line
3x+45=180
3x=135
x= 45
Answer:
System of Linear Equations entered :
[1] 4x - 3y = 15
[2] 2x + 2y = 4
Step-by-step explanation:
// Solve equation [2] for the variable y
[2] 2y = -2x + 4
[2] y = -x + 2
// Plug this in for variable y in equation [1]
[1] 4x - 3•(-x +2) = 15
[1] 7x = 21
// Solve equation [1] for the variable x
[1] 7x = 21
[1] x = 3
// By now we know this much :
x = 3
y = -x+2
// Use the x value to solve for y
y = -(3)+2 = -1
Solution :
{x,y} = {3,-1}
Answer:
8%
Step-by-step explanation:
70.20-65=5.20
5.20/65 x 100 = 8
PERIOD!!!
