Answer:
(-9.5,1,7)
Step-by-step explanation:
Explanation:
Remember: we have to isolate the variable x, so that means we have to get x by itself.
Step 1:
Let’s look at our equation:

Let’s subtract 2x from both sides of the equation, since our goal is to isolate the variable. You could also subtract 6x from both sides, but you would end up with a negative number, and I find it easier to deal with positive numbers.

Step 2:
Now, let’s subtract 57 from both sides of our equation.

Step 3:
Since we have to isolate x, let’s divide both sides of the equation by 4.

Our final answer: x = 64.5
None of your options is the correct answer. Notify your teacher, tutor, etc. since there none of the options are correct.
Answer:
120 shirts
Step-by-step explanation:
Let the number of blue shirt be= 4x
Let the number of white shirt be= 5x
Let the number of green shirt be= x.
Number of blue shirt is 48, x=12
Total shirts=10x=10*12=120
Answer:
y = -16
x = 2
Step-by-step explanation:
-×2/ -x - 5y = 78 ➡ 2x + 10y = -156 (whole equation multiplied with -2)
then add up two equations
2x + 10y = -156
-2x + 2y = -38 (2x will be eliminated)
12y = -192
y = -16
now you can find x using the value of y
if
2x + 10y = -156 ➡ 2x -160 = -156 ➡ 2x = -156 + 160 ➡ 2x = 4