1.5x + 3.6y=2.1, 2.5(x+1)=6y
Answers
Answered by
12
1.5x + 3.6y=2.1
let multiply 10 on both sides
15x +36y =21
dividing throughout by 3
5x +12y=7----(1)
2.5 (x+1)=6y
multiplying both sides by 10
25x +25=60y
y=25x+25/60-----(2)
(2) in (1)
5x + 12 ( 25x+25/60)=7
5x + ( 25x+25/5)=7
25x+25x+25=7×5
50x +25=35
50x=10
x= 1/5
y=25 × 1/5 +25/60
=5+25/60
= 30/60
=1/2
let multiply 10 on both sides
15x +36y =21
dividing throughout by 3
5x +12y=7----(1)
2.5 (x+1)=6y
multiplying both sides by 10
25x +25=60y
y=25x+25/60-----(2)
(2) in (1)
5x + 12 ( 25x+25/60)=7
5x + ( 25x+25/5)=7
25x+25x+25=7×5
50x +25=35
50x=10
x= 1/5
y=25 × 1/5 +25/60
=5+25/60
= 30/60
=1/2
Anonymous:
hope this helpa
helps*
Answered by
4
Answer:
(0.2,0.5) or x = 0.2 & y = 0.5
Step-by-step explanation:
..........................
Attachments:
Similar questions