2×+3×-5=0 ×+4×-12=0 ×-5×-3=0

2x+3x-5= 0
2x+3x = 5
5x = 5
x = 5/5 = 1


x+4x-12=0
x+4x = 12
5x = 12
x = 12/5

x-5x-3=0
x-5x = 3
6x = 3
x = 3/6 = 1/2


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