Question

a) 5.(y-3)=2y+3
b)-8.(x1)=-16
c) 4.(2x-3)=5.(x+3)

Answer 1

Resposta:

a) 5y-15=2y+3

3y=18

y=18/3

y=6

c) 4(2x-3)=5(x+3)

8x-12=5x+15

8x-5x=15+12

3x=27

x=27/3

x=9

4(2.9-3)=5(9+3)

4(18-3)=5(12)

4(15)=5(12)

60=60

Answer 2

Resposta:

a)

y= 6

b)

x= 128

c)

40x² + 60x - 180

Explicação passo-a-passo:

a) 5.(y-3)= 2y+3

5y- 15 = 2y+3

5y - 2y - 15 = 3

5y - 2y = 3 + 15

3y= 3 + 15

3y = 18

y = 18 ÷ 3

y= 6

b) -8.(x1)=-16

-8x. (-16)

8x.16

x= 128

c) 4.(2x-3)=5.(x+3)

20(2x-3)=5.(x+3)

(40x - 60x) . (x+3)

40x² + 120x - 60x - 180

40x² + 60x - 180