Решите уравнения: -3х+14=4х+56 4х-1=2х+0.3 -3(2х-0.8)=2(х+3.6)

Question

Решите уравнения: -3х+14=4х+56 4х-1=2х+0.3 -3(2х-0.8)=2(х+3.6)

Answer 1

-3х+14=4х+56               4х-1=2х+0,3                           -3(2х-0,8)=2(х+3,6)

-3х-4х=56-14                 4х-2х=0,3+1                           -6х+2,4=2х+7,2

-7х=42                            2х=1,3                                   -6х-2х=7,2-2,4

х=42/(-7)                        х=1,3/2                                   -8х=4,8

х=-6                               х=0,65                                    х=-0,6

Answer 2

-3х+14=4х+56

-7x-42=0

x=-42/7
x=-6

 

4х-1=2х+0.3

2x-1.3=0

x=1.3/2

x=0.65

 

-3(2х-0.8)=2(х+3.6)

-6x+2.4-2x-7.2=0

-8x-4.8=0

x=-4.8/8

x=-0.6