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Please Help Me Solve This . - Education - Nairaland

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Please Help Me Solve This Book 4 Quantitative Reasoning Problem / Maths Guru Please Help Me Solve This Simultaneous Equations For My Young(photo) / Can U Solve This Primary 6 Quantitative Reasoning (2) (3) (4)

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Please Help Me Solve This . by goldensoul55: 9:12pm On May 14, 2020
Please I need help in this quantitative reasoning

Re: Please Help Me Solve This . by Amotolongbo(f): 9:17pm On May 14, 2020
Example 1
(5-2) + (4-3) = 4

Example 2
(2-1) + (4-3) = 2

Question 17
(8-3) + (7-5) = 7

Question 18
(9-2) + (10-a) = 16
7 +10 - a = 16
a = 17-16 = 1

Question 19
(2-5) + (x-7) = 11
3+ x-7 = 11
x = 15

Question 20
(B-12) + (3-4) = 12
B- 12 - 1= 12
B = 12+ 13 = 25
Re: Please Help Me Solve This . by RealLordZeus(m): 9:26pm On May 14, 2020
Lol!

Sum of the left hand side - sum of the right hand side = middle number
Re: Please Help Me Solve This . by Amotolongbo(f): 9:34pm On May 14, 2020
RealLordZeus:
Lol!

Sum of the left hand side - sum of the right hand side = middle number
It looks so ambiguous.

There are 3 ways to solve it with the same answers
Re: Please Help Me Solve This . by shilenji(m): 9:44pm On May 14, 2020
(5+4) -(3+2) =4 which is in the middle
Re: Please Help Me Solve This . by Nobody: 10:12pm On May 14, 2020
For the example

Let 4' & 2' represent the 4 and 2 in the middle respectively. We have that

4'*3+4'*2=12+8=20

5*4=20

And

2'*3+2'*1=6+2=8

4*2=8.

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