Question

4x-1.5y=6.5,3x+2y=.9 solve it by elimination method

Answer 1

Answer:

$\huge{\boxed{\boxed{\sf{x=1.14\:and\:y=-127}}}}$

Step-by-step explanation:

$\huge{\boxed{\boxed{\underline{\sf{SOLUTION-}}}}}$

$\huge{\boxed{\boxed{\underline{\sf{ELIMINATION\:METHOD-}}}}}$

$4x - 1.5y = 6.5 - - - - - (1) \\ 3x + 2y = 0.9 - - - - - (2) \\ multiplying \: 3 \: in \: (1) \: and \: 4 \: in \: (2) \\ 12x - 4.5y = 19.5 - - - - - (3) \\ 12x + 8y = 3.6 - - - - - (4) \\ subtracting \:( 4) \: from \: (3) \\ = ) - 4.5y - 8y = 19.5 - 3.6 \\ = ) - 12.5y = 15.9 \\ = )y = \frac{ - 15.9}{12.5} \\ = )y = - 1.27 \\ putting \: the \: value \: of \: y \: in \: (3) \\ 12x - 4.5y = 19.5 \\ = )12x - 4.5 \times - 1.27 = 19.5 \\ = )12x + 5.715 = 19.5 \\ = )12x = 19.5 - 5.715 \\ = )12x = 13.785 \\ = )x = \frac{13.785}{12} \\ = )x = 1.14$

$\huge{\boxed{\boxed{\sf{x=1.14\:and\:y=-127}}}}$