diketahui persamaan 5 (3x + 8) = 2 (3x + 2), maka nilai x2 adalah
math

Quiz
•
Mathematics
•
7th Grade
•
Medium

serli himmatus
Used 29+ times
FREE Resource
15 questions
Show all answers
1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
-4
16
-16
36
Answer explanation
5 (3x + 8) = 2 (3x + 2)
(5 x 3x) + (5 x 8) = (2 x 3x) + (2 x 2)
15x + 40 = 6x + 4
15x - 6x = 4 - 40
9x = -36
x = -4
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
nilai y dari persamaan
-5y - 180 = 60 - (-7y) adalah..
-120
20
-20
120
Answer explanation
-5y - 180 = 60 - (-7y)
-5y - 7y = 60 + 180
-12y = 240
y = 240/-12
y = -20
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
niali x pada persamaan
2 (x + 7) = x - 8 adalah
-22
22
-22/3
22/3
Answer explanation
2 (x + 7) = x - 8
2x + 14 = x - 8
2x - x = -8 - 14
x = -22
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
2x - 4 = 10
2x - 4 - 4 = 10 - 4
2x = 6
x = 3
langkah dan jawaban soal di atas salah. tentukan jawaban yang benar dari soal tersebut !
2
4
6
7
Answer explanation
2x - 4 = 10
2x = 10 + 4
2x = 14
x = 7
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
manakah yang merupakan persamaan linear satu variabel
3x - 2y = 6
4m + 3 < 15
x2 = 49
5y - 3 = 2y + 9
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
tentukan penyelesaian dari 2x + 8 = 20
2
6
8
10
Answer explanation
2x + 8 = 20
2x = 20 - 8
2x = 12
x = 12/2
x = 6
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
nilai p yang memenuhi persamaan 3p - 4 = p + 8 adalah
12
-6
6
-12
Answer explanation
3p - 4 = p + 8
3p - p = 8 + 4
2p = 12
p = 12/2
p = 6
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