The answer is A. If you translate the triangle 10 units up and reflect it over the y-axis, the triangle will be on top of the other.
Its simple (n-12) because n is the variable and since it says fewer, then that means less than, which is subtracted by the number given which would be 12. Hope this helps! XD
Triangles area is 40 cm^2 and the rectangles area is 437 centimeters squared I assume you mean triangle by the phrase tringe
X+y=3
Subtract x from both sides
y=-x+3
Substitute
2x--x+3=6
2x+x+3=6
3x+3=6
Subtract 3 from both sides
3x=3
Divide both sides by 3
x=1
