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Plz solve it in the page and send pic of that page |
Answer» QUESTION:Solve the EQUATION:
ANSWER:
GIVEN:
TO FIND:
EXPLANATION:METHOD 1:2x + 3y = 9------>1 3x + 4y = 5-----> 2 Multiply by 3 on both sides of equation 1. 6x + 9y = 27 -------> 3 Multiply by 2 on both sides of equation 2. 6x + 8y = 10-------> 4 Subtract equation 3 and 4 Substitute y = 17 in equation 1 2x + 3(17) = 9 2x = 9 - 51 2x = - 42 x = - 21 HENCE THE VALUE OF X = - 21 AND Y = 17. VERIFICATION:Substitute x = - 21 and y = 17 in equation 2 3( - 21) + 4(17) = 5 - 63 + 68 = 5 5 = 5 HENCE VERIFIED.METHOD 2:2x + 3y = 9 2x = 9 - 3y x = (9 - 3y) / 2 Substitute x = (9 - 3y)/2 in 3x + 4y = 5 3((9 - 3y)/2) + 4y = 5 Multiply by two on both sides. 3(9 - 3y) + 8y = 10 27 - 9y + 8y = 10 - y = 10 - 27 y = 17 Substitute y = 17 in 3x + 4y = 5 3x + 4(17) = 5 3x + 68 = 5 3x = 5 - 68 3x = - 63 x = - 21 HENCE THE VALUE OF X = - 21 AND Y = 17. |
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