Necesito resolver estos dos ejercicios de Algebra (Ecuaciones) 5x + 10 (x + 7) = 100 5 -6a + 2 (a -.... Question from @carlostt1

Articles
Register

August 2018 2 17 Report

Necesito resolver estos dos ejercicios de Algebra (Ecuaciones)
5x + 10 (x + 7) = 100
5 -6a + 2 (a -3 ) = -2

parayudarte $5x + 10(x + 7) = 100 \\
5x + 10x + 70 = 100 \\
15x = 100 - 70 \\
15x = 30 \\
x = 30 \div15 \\
x = 2 \\ \\ 5-6a+2(a-3)=-2 \\ 5-6a+2a-6=-2 \\ -4a-1=-2 \\ -1+2=4a \\ 1=4a \\ \frac{1}{4}=a$

2 votes Thanks 1

nivresiul 5x + 10 (x + 7) = 100
5x + 10x + 70 = 100
15x = 30
x = 2
luego
5 - 6a + 2 (a - 3) = - 2
5 - 6a + 2a - 6 = - 2
- 1 - 4a = - 2
- 1 + 2 = 4a
1 = 4a ⇒ a = 1 / 4
suerte

1 votes Thanks 1