what is the method of cross multiplication in the operation of iit methods
Answers
Answer:
cross multiplication is also used to check digit smaller or larger
cross multiplication also used for linear equation
Answer:
The next method of solving linear equations in two variables that we are going to learn about is method of cross multiplication.
Let us see the steps followed while soling the linear equation by method of cross multiplication:
Assume two linear equation be
A1 x + B1y + C1 = 0, and
A2x + B2y + C2 = 0.
The coefficients of x are: A1 and A2.
The coefficients of y are: B1 and B2.
The constant terms are: C1 and C2.
Step-by-step explanation:
. Solve for ‘x’ and ‘y’:
3x + 2y + 10 = 0, and
4x + 5y + 20 = 0.
Solution:
Let us solve the given equations using method of cross multiplication:
The coefficients of x are 3 and 4.
The coefficients of y are 2 and 5.
The constant terms are 10 and 20.
The table can be formed as:
Method of Cross Multiplication
xB1C2−B2C1=yC1A2−C2A1=1A1B2−A2B1
On substituting respective values, we get:
x2×20−5×10=y10×4−20×3=13×5−4×2
x−10=y−20=17
Equating x term with constant term, we get x = -10/7.
On equating y term with constant y term, we get y = -20/7.
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