Question

Find the value of x if x²+3x=x²+7x-18

Answer 1

${x}^{2} + 3x = {x}^{2} + 7x - 18 \\ 3x = 7x - 18 \\ - 4x = - 18 \\ 4x = 18 \\ 2x = 9 \\ \times \: = \frac{9}{2} \\ x = 4.5$
I hope my helping hands will help you my friend..

Answer 2

${x}^{2} + 3x = {x}^{2} + 7x - 18 \\ \\ {x}^{2} - {x}^{2} + 3x - 7x = - 18 \\ \\ - 4x = - 18 \\ \\ 4x = 18 \\ \\ x = \frac{18}{4} \\ x = \frac{9}{2}$