Question: Use the idea behind Example 15 with a graphing utility to solve the following systems of equations. Round answers to two decimal places. 25x +

Use the idea behind Example 15 with a graphing utility to solve the following systems of equations. Round answers to two decimal places. 

25x + 61 y – 12z = 25 12y + 7z = 10 z = -4 18x Зх + 4у — -4

25x + 61 y 12z = 25 12y + 7z = 10 z = -4 18x + 4 -4

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