Solve 152x-378y =-74, -378x+152y =-604 by cross multiplication method
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Step-by-step explanation:
152x-378y=-74
152y-378x=-604
152x-378y-(152y-378x)=-74-604=-678
152x-378y-152y+378x
=152x-152y+378x-378y
=152(x-y)+378(x-y)
=(x-y)(152+378)=(x-y)(530)=-678
=x-y=-678/530=-339/265
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