Answer:
https://www.calculators.tech/standard-form-calculator
go on MATH.WAY. it'll give you the answer and explanation
Step-by-step explanation:
You can solve this by substitution.
First, find y.
x + y =7
-x on both sides
y = x -7
now substitute in second equation.
3x - (x-7) = 1
+7 on both sides
3x - x = 8
2x = 8
x = 4
now that you know x = 4,
substitute it into the first equation
y + (4) = 7
y = 3
x =4 y =3
The answer is A the Leath because length times with equals height