Question

F— 4.(x+5)+3.(x+5)=21
G— 2.(x+5)-3.(5-x)=10

Answer 1

Resposta:

Explicação passo-a-passo:

4(x+5) + 3(x+5) = 21

4x + 20 + 3x + 15 = 21

7x = 21-20-15

7x= -14

x= -14/7

x=-2

2(x+5) - 3(5-x) = 10

2x + 10 - 15 + 3x =10

5x = 10-10+15

5x = 15

x=15/5

x=3