Question

Oblicz równania.

2x-8=12, 5=2x-3, 6x+4=2x+12, 5x+5x=4x+1, 4x-12=20+x, 2-3x=8-5x,

proszę, szybko ! :3

Answer 1

a)
2x-8=12
2x = 12 + 8
2x = 20   /:2
x = 10

b)
5=2x-3
-2x = -3 - 5
-2x = -8   /:(-2)
x = 4

c)
6x+4=2x+12
6x - 2x = 12 - 4
4x = 8    /:4
x = 2

d)
5x+5x=4x+1
5x + 5x - 4x = 1
6x = 1    /:6
x = 1/6

e)
4x-12=20+x
4x - x = 20 + 12
3x = 32     /:3
x = 32/3

f)
2-3x=8-5x
-3x + 5x = 8 - 2
2x = 6    /:2
x = 3