Question

please anyone answer both the questions

l will mark u as brainliest
please no useless answers it's a humble request to all​

Answer 1

b)

$4x -6 = 18 \\ 4x = 18 + 6 \\ 4x = 24 \\ x = 24 \div 4 \\ x = 6$

Answer 2

$\huge\mathcal\red{Answer}$

a)

$15a {}^{2} b {}^{3} c + 30abc \: \\ = 15abc(ab {}^{2} + 2)$

➡️ 15abc(ab*2+2)

b)

$4x - 6 = 18 \\adding \: 6 \: to \: both \: side \: of \: equation \: \\ 4x - 6 + 6 = 18 + 6 \\ 4x = 24 \\ \: divide \: both \: sides \: of \: the \: equation \: by \: 4 \\ \frac{4x}{4} = \frac{24}{4} \\ x = 6$

Hence x = 6