The answer is y = x-4.
<u>Step-by-step explanation</u>:
- The given expression is x-y=4
- Keep y alone on one side and move remaining terms to the other side.
⇒ -y = 4-x
- To have y alone, Multiply the above expression with -ve sign on both sides.
⇒ y = x-4
Substitution method is used to solve the linear system of equations for one or more variables.
Consider the first equation y = 3x + 3 -----(1)
In equation (1) plug in y=x-1, we get
x -1 = 3x + 3
Add -3x on both side , we get
x-3x -1 = 3x-3x +3
-2x-1=0 + 3
Now add +1 on both sides, we get
-2x-1+1= 3+1
-2x + 0 =4
Now divide both side by -2
-2x/-2= 4/-2
X= -2
Now put x=-2 in the the second equation,
y=x-1
y=(-2)-1
y=-3
Solution(-2,-3)
Answer:
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Step-by-step explanation:
78
/ \
39 2
/ \
3 13
you cannot simplify the square root of 78.
Answer:
98
i hope this helps! :)
Step-by-step explanation:
given 7 * 14 = ?
multiply 14 by 7 14 * 7 = 98
98
