x+y=5
-x -x
Equals:
y=-x+5
Now you have:
y=-x+5
x-y=1
Insert -x+5 into y
x-x+5=1
Combine like terms
2x+5=1
Subtract 5.
2x=-4
Divide 2.
Answer: x=-2
2450 miles / 35 inches = 70 miles / inch
(big freaking map!)
Hello!
With inequalities are solved just like equations. I will solve both below.
4x-3+3>5+3
4x/4>8/4
x>2
-2x-7+7>1+7
-2x/-2>8/-2
x>-4
Our solutions are x>2 and x>-4.
Hope this helps!
