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secondary 2 | Maths
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Can someone help
Date Posted: 6 years ago
Views: 417
You're on the right track. Just manipulate the variables "x" and "y".
Clue 1: make one of the variable as the subject.
Clue 1: make one of the variable as the subject.
X+y= 138
X= 138-y _(1)
3x+2y= 331_(2)
Sub (1) into (2):
3(138-y)+2y=331
414-3y+2y=331
y= 83
Since y=83,
X=138-83
X=55
X= 138-y _(1)
3x+2y= 331_(2)
Sub (1) into (2):
3(138-y)+2y=331
414-3y+2y=331
y= 83
Since y=83,
X=138-83
X=55
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This is for question 2. It helps to draw diagrams/shapes to better understand :)
Date Posted:
6 years ago
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