Answer:
-12
Step-by-step explanation:
x+7-4x=19-2x
-3x+2x=19-7
-x=12
x=-12
Answer:
6 metals
Step-by-step explanation:
S is 170 Q is 90 and R is 62
Answer:
(-1.714, 1.857)
Step-by-step explanation:
Here, we want to find the approximate solution to the system of linear equations
We start by plotting the graph of the lines
We have the plot as shown below;
the red line represents the first equation while the blue line represents the second equation
We have the solution as the point at which the two lines meet
The solution to this is;
(-1.714, 1.857)