Question

5x-6x+30-7x=2x+10-7x-5x-20

Answer 1

$5x - 6x + 30 - 7x = 2x + 10 - 7x - 5x - 20 \\ \\ = \geqslant5x - 6x - 7x + 7x + 5x = - 30 + 10 - 20 \\ \\ = \geqslant - 1x + 5x = - 40x + 10x \\ \\ = \geqslant 4x= - 30 \\ \\ = \geqslant x = \frac{30}{4} \\ \\ = \geqslant \frac{15}{2}$

Answer 2

Answer:

$5x-6x+30-7x=2x+10-7x-5x-20\quad :\quad x=-20$

Step-by-step explanation:

$5x-6x+30-7x=2x+10-7x-5x-20$

$\mathrm{Add\:}7x\mathrm{\:to\:both\:sides}$

$5x-6x+30-7x+7x=2x+10-7x-5x-20+7x$

$\mathrm{Simplify}$

$5x-6x+30=2x+10-5x-20$

$\mathrm{Add\:similar\:elements:}\:5x-6x=-x$

$-x+30=2x+10-5x-20$

$\mathrm{Group\:like\:terms}$

$-x+30=2x-5x+10-20$

$\mathrm{Add\:similar\:elements:}\:2x-5x=-3x$

$-x+30=-3x+10-20$

$\mathrm{Add/Subtract\:the\:numbers:}\:10-20=-10$

$-x+30=-3x-10$

$\mathrm{Subtract\:}30\mathrm{\:from\:both\:sides}$

$-x+30-30=-3x-10-30$

$\mathrm{Simplify}$

$-x=-3x-40$

$\mathrm{Add\:}3x\mathrm{\:to\:both\:sides}$

$-x+3x=-3x-40+3x$

$\mathrm{Simplify}$

$2x=-40$

$\mathrm{Divide\:both\:sides\:by\:}2$

$\dfrac{2x}{2}=\dfrac{-40}{2}$

$\mathrm{Simplify}$

$x=-20$