mahmoud989879p50if1 mahmoud989879p50if1

30-03-2018
Mathematics

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Hi please someone help me for question 17 ??? Please

Hi please someone help me for question 17 Please class=

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zizoux07p0ac3m zizoux07p0ac3m

30-03-2018

2x + y = 1.57 → y = 1.57 - 2x
x + 3y = 2.96
x + 3(1.57 -2x) = 2.96
x + 4.71 - 6x = 2.96
-5x = -1.75
x = 0.35$
y = 1.57 - 2(0.35) = 0.87$

3x +2y = 3(0.35) + 2(0.87) = 2.79$

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