Question

Aflati x din : a)(12+x)+14=4xX-4
b)(3xX+2):4-2=3
c)5xX:2=2525


Va rog ajutati-ma !!!!!!
Multumesc !!!!!!!

Answer 1

a) (12+x)+14=4x-4 <=> 12+x+14=4x-4 <=> x+26=4x-4 <=> 3x=30 <=> x=10.
b) (3x+2):4-2=3 <=> (3x+2):4=5 <=> 3x+2=20 <=> 3x=18 <=> x=6.
c) 5x:2=2525 <=> 5x=5050 <=> x=1010.

Answer 2

a) (12 + x) + 14 = 4x - 4
x - 4x = - 12 - 14 - 4
- 3x = - 30
x = 30 : 3
x = 10
b) (3x + 2) : 4 - 2 = 3
(3x + 2) : 4 = 3 + 2
3x + 2 = 5 * 4
3x = 20 - 2
x = 18 : 3
x = 6
c) 5x : 2 = 2525
5x = 2525 * 2
x = 5050 : 5
x = 1010