Asked by stefan

suresh scored 15 mareks more than ramesh in maths.if the sum of their marks in maths is 275.write the statement in linear equation in two variables
Answered by stefan
15x + y = 0
x + y = 275
Answered by Steve
y = x+15
x + y = 275
Answered by stefan
15x + y = 0 ---------- 1 x1
x + y = 275 -------- 2 x15
15x + y = 0
15x +15y = 4125
- - -
----------------------
0 -14y = -4125
y = -4125
-14

Answered by stefan
i don't know pls help me
Answered by stefan
ans x=130 and y=145 is it right pls help me
Answered by Reiny
Steve gave you the two equations, so use substitution.

y = x + 15
x+y = 275

sub 1st into 2nd
x + (x+15) = 275
2x = 260
x = 130
back into y = x+15
y = 130+15 = 145
Answered by Blessings
maybe it can be like this one

15x+y=0............(1)
x+y=275........(2)
solution
x=275-y
substitute x=275-y into equation 1
15(275-y)=0
4125-5y=0
5y=0+4125
5y=4125
dived 5 both sides
y=275
substituting y=275 into equ 2
x+y=275
x+275=275
x=275-275
x=0
y=275
x=0
Answered by Anonymous
Suresh = x, Ramesh = y
ATQ, x = y + 15 ......(¡)
x + y = 275 ..... (¡¡)
By substitution
y + y + 15 = 275
2y = 260
y = 130
x = 130 + 15 = 145
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