0.2x+0.3y=1.3
0.4x+0.5y=2.3
solve by substitution method
Answers
Answered by
17
Answer:
x=2;y=3
Step-by-step explanation:
0.2x+0.3y=1.3
(0.2x+0.3y)×10=1.3×10
2x+3y=13 ---[1]
0.4x+0.5y=2.3
(0.4x+0.5y)5=2.3×5
2x+2.5y=11.5 ---[2]
Eq. [1]-[2]
2x+3y-2x-2.5y=13-11.5
0.5y=1.5
5y=15
y=3
x=(13-3y)/2=(13-3×3)/2=2
i hope it helps.
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