Question

Soal:
○ - □ = 13
○ + □ = 21

Nilai dari (□ × ○) + (□ × (-□)) = ...
a. 68
b. 52
c. -17
d. 45

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Answer 1

Verified answer

Jawaban:

b. 52

Penjelasan dengan langkah-langkah:

Eliminasi kotak

bulet - kotak = 13

bulet + kotak = 21

_______________+

2bulet = 34

bulet = 17

..

Subtitusi bulet = 17

bulet + kotak = 21

17 + kotak = 21

kotak = 4

..

(kotak × bulet) + (kotak × (- kotak))

= (4 × 17) + (4 × (-4))

= 68 + (-16)

= 52

..

Bryantama Jawara Copas

[tex]\boxed{\colorbox{ccddff}{Answered by Danial Alf'at}}[/tex]

Answer 2

○ - □ = 13

○ + □ = 21

=========

(1 + 1)○ = (13 + 21)

2○ = 34

○ = 34/2

○ = 17/1

○ = 17

○ + □ = 21

17 + □ = 21

□ = 21 - 17

□ = 4

MAKA :

(□ × ○) + (□ × (-□))

= (4(17) + (4(-4)

= 68 + (-(4(4)

= 68 + (-16)

= 68 - 16

= 52