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defon
3 years ago
11

Solve 3x+2y=4 4x+3y=7 algebraically

Mathematics
1 answer:
Leona [35]3 years ago
8 0
Step 1. Multiply first equation with -3 and the second one with 2. You'll get:
\left \{ {{-9x-6y=-12} \atop {8x+6y=14}} \right.

Step 2. Add both equations together. You'll get:
-x=2, which gives x = -2

Step 3. Replace x = -2 in the first equation and calculate y.
3(-2)+2y=4\\
y=\frac{4+6}{2}=5

The solution is: x=-2, y=5
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<h3>What is simple interest?</h3>

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