solve : 14=3y+x ; 20=2y-3x plz give me full answer
Answers
Answered by
0
A)Answer:
3.5
=>Step-by-step explanation:
14=3y+x
14=4xy
xy=14/4
xy=3.5
B)Answer:
4
=>Step-by-step explanation:
20=2y-3x
20=5xy
xy=20/5
xy=4
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Answered by
0
Answer:
y=
x=
Step-by-step explanation:
we can arrange them,
x+3y-14=0 (1)
3x-2y+20=0 (2)
multiply (1) by 4 and subtract (2) from it,
3x+9y-42=0
3x-2y+20=0
- - -
----------------
11y - 62 = 0
----------------
11y = 62
y=62 /11
Putting value of y in (1)
x+3(62/11) -14 =0
x+186/11 -14 =0
x+ 186-154/11 = 0
x=
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