2x+5y=-4
-3x-4y=-8
The solution is___
Will mark brainiest. Please help me
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•Make y the subject:
2x+5y=-4
so y=(-4-2x)/5
•Input it in second equation:
-3x-4(-4-2x)/5)=-8
-15x+(16+8x)=-40
-7x=-56
x=-56/(-7)
=8
•Now calculate y
y=(-4-2x)/5
=(-4-2(8))/5
=-20/5
=-4
So x=8 and y=-4
2x+5y=-4
so y=(-4-2x)/5
•Input it in second equation:
-3x-4(-4-2x)/5)=-8
-15x+(16+8x)=-40
-7x=-56
x=-56/(-7)
=8
•Now calculate y
y=(-4-2x)/5
=(-4-2(8))/5
=-20/5
=-4
So x=8 and y=-4
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