Question

EU PRECISO DA NUMERO 4 H,I,J,K.

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Answer 1

4)
h) $\frac{4a-2}{3} = \frac{5.(a+3)}{2}$

$\frac{4a-2}{3} = \frac{5a+15}{2}$

$15a+45=8a-4$

$15a-8a=-4-45$

$7a=-49$

$a= \frac{-49}{7}$

$a=-7$

i) $\frac{3x}{2} +2=3x-2$

$3x +4=6x-4$

$3x-6x =-4-4$

$-3x =-8$

$x= \frac{-8}{-3}$

$x= \frac{8}{3}$

j) $\frac{2x-3}{4} + \frac{x-1}{2} = \frac{5-x}{2}$

$\frac{2x-3}{4} + \frac{2.(x-1)}{4} = \frac{2.(5-x)}{4}$

$2x-3+ 2.(x-1) = 2.(5-x)$

$2x-3+ 2x-2 = 10-2x$

$4x-5 = 10-2x$

$4x+2x = 10+5$

$6x = 15$

$x= \frac{15}{6}$

$x= \frac{5}{2}$

k) $\frac{x+2}{3} - \frac{4-5x}{2} = \frac{3x-5}{4} + \frac{1}{3}$

$\frac{4.(x+2)}{12} - \frac{6.(4-5x)}{12} = \frac{3.(3x-5)}{12} + \frac{4}{12}$

$4.(x+2) -6.(4-5x) = 3.(3x-5) + 4$

$4x+8 -24+30x= 9x-15 + 4$

$34x-16= 9x-11$

$34x- 9x=-11+16$

$25x=5$

$x= \frac{5}{25}$

$x= \frac{1}{5}$