Question

solve the equation by cross multiplication method
1)2x-5y=4
2)3x-8y=5

x3-2x2-19x+20÷x2-6x+5​

Answer 1

Answer:

x/(+5×5)-(-8×4) = y/(4×3)-(5×2) = 1/(2×-8)-(3×-5)

x/-25+32 = y/12-10 = 1/-16+15

x/7 = y/2 = 1/-1

therefore, x/7 = 1/-1

x = -7

and y/2 = 1/-1

y = -2

hope it's help you.......

Answer 2

ANSWER :

xy = 7,2

STEP BY STEP EXPLANATION :

Represent the given equations in standard form

2x-5x=4 =2x-5y-4=0----------(1)

3x-8y=5=3x-8y-5=0-----------(2)

using cross multiplication multiplication method to solve the above equation