You can
put this solution on YOUR website!2x - 5y= 21
7x + 3y = 53
Lets start with changing the first equation to x equals;
2x=21+5y
x=
+
now replace the x in the second equation;
7(
+
)+3y=53
Distribute the 7;
+
+3y=53
subtract
from both sides and add like terms;
+3y=53-
get common denominators so you can add or subtract fractions;
+
=
-
y=
multiply each side by the reciprocal of
;
(
)
y=
(
)
y=-
=-1
Now replace the y in the first equation with -1;
2x - 5(-1)= 21
2x+5=21
2x=16
x=8
so answer; y=-1, x=8
:)
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