Answer:
x = 26, y = 9
Step-by-step explanation:
Let one number be x, and the other be y. Set the equations:
x + y = 35
x - y = 17
First, isolate the x in the first equation. Subtract y from both sides
x + y (-y) = 35 (-y)
x = 35 - y
Plug in 35 - y for x in the second equation
(35 - y) - y = 17
35 - 2y = 17
Isolate the variable. Note the equal sign, what you do to one side you do to the other side. Do the opposite of PEMDAS. First, subtract 35 from both sides
35 (-35) - 2y = 17 (-35)
-2y = -18
Isolate the variable (y). Divide -2 from both sides
(-2y)/-2 = (-18)/-2
y = -18/-2
y = 9
Plug in 9 for y in one of the equations.
x + y = 35
x + 9 = 35
Isolate the variable (x). Subtract 9 from both sides
x + 9 (-9) = 35 (-9)
x = 35 - 9
x = 26
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