Question 1089076

A triangle has 3 sides. The first side has a length of x. The second side has a length that is 12 more units than the first side. The third side has an identical length to the first side. Write a simplified algebraic expression in terms of x for the perimeter of the triangle
<pre>This is UNNECESSARY: "A triangle has 3 sides." My 3rd grader knows this! I'm sure even 2nd, 1st graders, and pre-K kids know that too.
Anyway, length of 1st side: x
Length of 2nd side: x + 12
Length of 3rd side: x
Perimeter of the TRIANGLE that has 3 sides: {{{highlight_green(matrix(1,3, x + x + 12 + x, "=", 3x + 12 ))}}}