Question

Mencari nilai ×
persamaan linier aljabar
a. 7x/10 - 4 = 10
b.x/2 - x/4 = 2
c.x = 3x + 4/5
tlg di bantu yaaa...
lumayan loo poin nyaa = 30
yg mau membantu menggunakan cara yaaa...

Answer 1

A) 7x/10 - 4 = 10
7x/10 = 14
7x = 140
x = 20

b) x/2 - x/4 = 2  (kalikan 4 kedua ruas)
2x - x = 8
x = 8

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

Answer 2

A. 7x/10-4 = 10
7x/10 = 14
7x = 140
x = 20
b. x/2 - x/4 =2
3x/4 =2
× = 8/3
c. x = 3x + 4/5
-2× = 4/5
-10x = 4
x = -0,4