Tasha is planning an expansion of a square flower garden in a city park, if each side of the original garden is increased by 7m, the new total area of the garden will be 169m^2. find the length of each side of the original garden

If the park is square and each side was 7m in length, then you multiple 7 by 4 and get 28, then subtract that by 169 and get 141.                                                                                                                                                                                                                                                            141

1. isolate the variable, in this case, d. subtract 35.5 on both sides of the equation.2. 52 subtracted by 35.5 is 16.53. therefore your answer would be d= 16.5this is the basics of pre algebra, isolating variable through adding, subtracting, multiplying, and dividing, if you have any other questions to ask just comment!