Question

4x-15y=64, 3x+2y=9 cross multiplication method

Answer 1

Answer:

this can be written as

4x-15y-64 = 0

3x+2y -9 = 0

by cross multiplication

x = -15×-9 -2×-64/4×2-3×-15

x= 135+128/8+45

x= 263 / 53

y = -156/53

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