Question

me ajudem preciso disso pra hoje
a conta tbm não só o resultado​

Answer 1

Explicação passo-a-passo:

a) $7x+2y+x+2y=8x+4y=8\cdot1+4\cdot2=8+8=16$

b) $2x+3y-x+3y=x+6y=1+6\cdot2=1+12=13$

c) $\dfrac{x}{3}+\dfrac{x}{5}=\dfrac{5x+3x}{15}=\dfrac{8x}{15}=\dfrac{8\cdot1}{15}=\dfrac{8}{15}$

d) $\dfrac{x}{2}+\dfrac{x}{3}=\dfrac{3x+2x}{6}=\dfrac{5x}{6}$

$\dfrac{x}{2}+\dfrac{x}{3}=\dfrac{5\cdot1}{6}=\dfrac{5}{6}$

e) $\dfrac{x}{2}+\dfrac{x}{3}+\dfrac{y}{4}=\dfrac{6x+4x+3y}{12}=\dfrac{10x+3y}{12}$

$\dfrac{x}{2}+\dfrac{x}{3}+\dfrac{y}{4}=\dfrac{10\cdot1+3\cdot2}{12}=\dfrac{10+6}{12}$

$\dfrac{x}{2}+\dfrac{x}{3}+\dfrac{y}{4}=\dfrac{16}{12}=\dfrac{4}{3}$

f) $0,25x-0,30x-0,35x+1,20x=0,80x=0,80\cdot1=0,80$

Answer 2

Resposta:

Bom eu n sei

Explicação passo-a-passo: