Question

les the simultaneous equations obtained by
Practice Set 1.4
ved by elimination method.
tions by graphical method and by Cramer's
= 15;
ame answers ? Solve and check it.
Solve the following simultaneous equations.
2 3
8 5
(1)
+ - =77
y
10 2
15 5
(2)
-2
x+ x - y
xty x- y
+
=
4 :
27
31
(3)
31
+
= 85 :
x-2
Y+3
27
+
= 89
y +3
x-2
ra
-4,1
C
1
+
1
y У
y
Convert into
into simultaneous equation
1
У y​

Answer 1

Answer:

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