How to do matrices in maths?

Recently i've been doing ICT for my second year of the course but now its different as I am now doing maths practitioners and need help on knowing the basic questions for adding, multiplying and subtracting matrices so that i can than get the hang of it and wont be any hassle anymore.

I was wondoring if someone could help me out step by step with a simple explanation or diagram on how you can solve the questions below which would really be appreciated.

Adding 23 and 69

Subtracting 53 from 126

Multiplying 85 * 23

(Also optional but would help me out greatly if someone showed these workings)

Convert the decimal numbers into binary
Perform the calculations in binary
Convert the back into decimal to check your answers, ensuring that the binary and decimal values have no discrepancy.

#Algebra #Matrices #MathProblem #Mathematics #MATHS

Easy Math Editor

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`2 \times 3`	$2 \times 3$
`2^{34}`	$2^{34}$
`a_{i-1}`	$a_{i-1}$
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Math	Appears as
Remember to wrap math in `\(` ... `\)` or `\[` ... `\]` to ensure proper formatting.
`2 \times 3`	$2 \times 3$
`2^{34}`	$2^{34}$
`a_{i-1}`	$a_{i-1}$
`\frac{2}{3}`	$\frac{2}{3}$
`\sqrt{2}`	$\sqrt{2}$
`\sum_{i=1}^3`	$\sum_{i=1}^3$
`\sin \theta`	$\sin \theta$
`\boxed{123}`	$\boxed{123}$