Matematika Sekolah Menengah Pertama Nilai (2x + y) dari sistem persamaan linear x +3y - 4z =-5 y + z = 2 6z = 3

elzalangworthulv – May 11, 2023

Nilai (2x + y) dari sistem persamaan linear
x +3y - 4z =-5
y + z = 2
6z = 3

Penjelasan dengan langkah-langkah:

6z = 3

z = 3/6

z = 1/2

y + z = 2

y + 1/2 = 2

y = 2 - 1/2

y = 3/2

x + 3y - 4z = -5

x + 3(3/2) - 4(1/2) = -5

x + 9/2 - 2 = -5

x = -5 - 9/2 + 2

x = - 15/2

2x + y = 2(-15/2) + 3/2 = -15 + 3/2 = - 27/2 = -13,5

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