Answer:
Step-by-step explanation:
Add 2 to both sides
Simplify
Subtract from both sides
Simplify
Multiply both sides by (reverse the inequality)
Simplify
Divide both sides by
Divide the numbers:
Divide the numbers:
Apply fraction rule:
Divide the numbers:
There are many ways to solve simultaneous linear equations. One of my favorite for finding integer solutions is graphing. The attached graph shows the solution to be ...
... (x, y) = (4, 7)
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You can also use Cramer's Rule, or the Vedic math variation of it, which tells you the solution to
is given by
Here, that means
... x = (9·67-5·75)/(9·8-5·3) = 228/57 = 4
... y = (75·8-67·3)/57 = 399/57 = 7
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A (graphing) calculator greatly facilitates either of these approaches.
