180-(110+40)=30
use two parallel lines and intersected line rule...
Answer:
The solution is: (x, y) = (9, -7)
Step-by-step explanation:
Step 1: Solve one of the equations for either x = or y = . We will solve second equation for y.
x+y=3
y=3-x
Step 2: Substitute the solution from step 1 into the second equation.
3x+4(3-x)=5
Step 3: Solve this new equation.
3x+4(3-x)=5
3x+12-4x=3
-x+12=3
-x=3-12
x=9
Step 4: Solve for the second variable
y=3-x
y=3-9
y=-7
The solution is: (x, y) = (9, -7)
here's how you solve it
|3x+11| > 2
apply the absolute rule so you get two equations
3x+11 < -2 3x+11 > 2
in both equations subtract 11 from both sides
11-11 = 0 -2-11 = -13 11-11 = 0 2-11 = -9
this leaves you with
3x < -13 3x > -9
in both equations divide 3 on both sides
3x/3 = x -13/3 3x/3= x -9/3 = -3
and in the end you get
x < -13/3 or x > -3
The answer is 30 because when you add 18 and 12 you get 30. The word problem could be that someone had 18 dollars and then found another 12 dollars.
