A 210 inch board is cut into two pieces. One piece is four times the length of the second piece. How long is the shorter piece?
1 answer:
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The equation (form) is:
The solution of the equation is:
Explanation:
First, let's call the number we are going to solve for "x".
Then two thirds of this number can be written as:
Then "plus 4" means add 4 we get:
"is 7" means that the above expression is equal to 7 (as follows):
The solution of the above equation is: