×+2y=5
4×-3y=0
kerjakan dengan metode eliminasi

8 x 2 − 7 x − 18 = 0 8 x 2 − 16 x + 9 x − 18 = 0 8 x ( x − 2 ) + 9 ( x − 2 ) = 0 ( x − 2 ) ( 8 x + 9 ) = 0 ⇔ ( x − 2 = 0 or 8 x + 9 = 0 ) . x = 2 x = − 8 9 ​

Answered by kate200468 | 2024-06-10

The solutions to the equation 8 x 2 − 7 x − 18 = 0 are x = 2 and x = − 8 9 ​ . This was found using factoring by rearranging the middle term. Both solutions can be derived by setting each factor equal to zero.
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Answered by kate200468 | 2024-12-23

Penyelesaian[tex]x + 2y = 5 \quad \quad (1)[/tex][tex]4x - 3y = 0 \quad \quad (2)[/tex][tex]4(x + 2y) = 4(5)[/tex][tex]4x + 8y = 20 \quad \quad (3)[/tex][tex](4x + 8y) - (4x - 3y) = 20 - 0[/tex][tex]4x + 8y - 4x + 3y = 20[/tex][tex]11y = 20[/tex][tex]y = \tfrac{20}{11}[/tex][tex]x + 2\left(\tfrac{20}{11}\right) = 5[/tex][tex]x + \tfrac{40}{11} = 5[/tex][tex]5 = \tfrac{55}{11}[/tex][tex]x = \tfrac{55}{11} - \tfrac{40}{11}[/tex][tex]= \tfrac{15}{11}[/tex][tex]x = \tfrac{15}{11}, y = \tfrac{20}{11}[/tex]

Answered by vinganzbeut | 2025-08-20