Matematika 4. (40 x 39) × (-12) 5. (82x73) × (-15) = ...x (...X...) = .... = ... X (...X...) = ... 4. ( 40 x 39 ) × ( -12 ) 5. ( 82x73 ) × ( -15 ) = ... x ( ... X ... ) = .... = ... X ( ... X ... ) = ...​

4. (40 x 39) × (-12) 5. (82x73) × (-15) = ...x (...X...) = .... = ... X (...X...) = ... 4. ( 40 x 39 ) × ( -12 ) 5. ( 82x73 ) × ( -15 ) = ... x ( ... X ... ) = .... = ... X ( ... X ... ) = ...​

Penjelasan dengan langkah-langkah:

Nomor 4

[tex] = (40 \times 39) \times ( - 12)[/tex]

[tex] = 40 \times(39 \times ( - 12))[/tex]

[tex] = 40 \times ( - 468)[/tex]

[tex] = - 18.720[/tex]

[tex] \: [/tex]

Nomor 5

[tex] = (82 \times 73) \times ( - 15)[/tex]

[tex] = 82 \times (73 \times ( - 15))[/tex]

[tex] = 82 \times ( - 1.095)[/tex]

[tex] = - 89.790[/tex]

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