Solve the following pair of simultaneous: 20%20%5C%5C%204x%20%2B%203y%20%3D%204" id="TexFormula1" title=" 5x + 2y = - 2 \\ 4x + 3y = 4" alt=" 5x + 2y = - 2 \\ 4x + 3y = 4" align="absmiddle" class="latex-formula">
1 answer:
Answer:
x = -2 , y = 4
Step-by-step explanation:
given:
5x + 2y = -2 <em>*4 </em>
4x + 3y = 4 <em>*5 </em>
Solving simultaneously,
20x + 8y = -8 ....eq 1
(-) 20x +15y = 20 ...eq 2
.............................................
-7y = -28
y = -28 / -7
y = 4
using equation 2,
20x +15(4) = 20
20x = -40
x = -2
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