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Jika x dan y merupakan penyelesaian dari sistem pe...

Jika dan merupakan penyelesaian dari sistem persamaan begin mathsize 14px style table attributes columnalign left end attributes row cell open curly brackets table attributes columnalign left end attributes row cell 3 x minus 4 y equals negative 18 end cell row cell 4 x plus y equals 52 end cell end table close end cell end table end style maka nilai dari begin mathsize 14px style open parentheses 3 x plus 2 y close parentheses end style adalah ....

Jawaban:

begin mathsize 14px style table attributes columnalign right center left columnspacing 0px end attributes row cell 3 x minus 4 y end cell equals cell negative 14 space left square bracket cross times 1 right square bracket end cell row cell 4 x plus space space y end cell equals cell 52 space space space space left square bracket cross times 4 right square bracket end cell end table end style 

table attributes columnalign left rowalign baseline baseline baseline baseline end attributes row cell size 14px 3 size 14px x size 14px space size 14px minus size 14px space size 14px 4 size 14px y size 14px equals size 14px minus size 14px 14 end cell row cell bottom enclose size 14px 16 size 14px x size 14px plus size 14px 4 size 14px y size 14px equals size 14px 208 size 14px space size 14px plus end enclose end cell row cell size 14px space size 14px space size 14px space size 14px space size 14px space size 14px space size 14px space size 14px space size 14px 19 size 14px x size 14px equals size 14px 190 end cell row cell size 14px space size 14px space size 14px space size 14px space size 14px space size 14px space size 14px space size 14px space size 14px space size 14px space size 14px space size 14px space size 14px x size 14px equals size 14px 10 end cell end table 

begin mathsize 14px style table attributes columnalign right center left columnspacing 0px end attributes row cell 4 x plus y end cell equals 52 row cell 4 open parentheses 10 close parentheses plus y end cell equals 52 row cell 40 plus y end cell equals 52 row y equals cell 52 minus 40 end cell row blank equals 12 row blank blank blank row cell 3 x plus 2 y end cell equals cell 3 open parentheses 10 close parentheses plus 2 open parentheses 12 close parentheses end cell row blank equals cell 30 plus 24 end cell row blank equals 54 end table end style 

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