Question

help-me

a)7x-13=2x+9

b)3x-5=x-2

c)3x-5=13+x

d)3x+5=2x

Answer 1

a)

$7x - 13 = 2x + 9 \\ 7x - 2x = 9 + 13 \\ 5x= 22 \\ x = \frac{22}{5}$

B)

$3x - 5 = x - 2 \\ 3x - x = - 2 + 5 \\ 2x = 3 \\ x = \frac{3}{2}$

C)

$3x - 5 = 13 + x \\ 3x - x = 13 + 5 \\ 2x = 18 \\ x = \frac{18}{2} \\ x = 9$

D)

$3x + 5 = 2x \\ 3x - 2x = - 5 \\ x = - 5$

BONS ESTUDOS!