Question

3a - 2b + 15a- 5a + 4c-2a

Please friends help me to answer the above picture I have posted as the question that I have wrote is not write ..

If anyone of you will answers the right answer I will mark him or her the brainest. , as I know the answers is 4a-2b+4c but I don't know how the working is so please do the working and post your answer...

please, please, please .....
................help me............​

Answer 1

ye question mujhe Aise hi karaya gya tha 7th class me

$3a \: - \: 2b \: + \: {15a}^{2} \: \div \: 5a \: + \: 4c \: - \: 2 a \: \\ {3 \: - \: 2 \: ( \: a \: - \: b \: ) } \: + {15a}^{2} \: \div \: 5a \: + \: 4c \: - \: 2a \\ 1ab \: + \: {15a }^{2} \: \div \: 5a \: + \: 4c \: - \: 2a \\ 1 {16ab}^{2} \: 5a \: + \: 4c \: - \: 2a \\ {316ab}^{2} \: + \: 4c \: - \: 2a \\ \\ {?320ab}^{2} - \: 2a \\ {318ab }^{2}$

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