Question

Пж помогите 4.7.a) 4(x+3)=5(x-2)
б) -2(x-5)+3(x-4)=4×+1
в)3(x-1)=2(x+2)
г)3(x-5)-2(x+4)=-5x+1

Answer 1

а) 4(x+3)=5(x-2)

4x+12=5x-10

4x-5x=-10-12

-x=-22

X=22

б) -2(x-5)+3(x-4) = 4x +1

-2x+10+3x-12=4x+1

x-2=4x+1

x-4x=1+2

-3x=3

X= - 1

в) 3(x-1)=2(x+2)

3x-3=2x+4

3(x-1)=2(x+2)

x=7

г) 3(x -5)-2(x + 4)= -5x+1

3x 15-2x-8=-5x+1

x − 23 = - 5x +1

x+5x=1+23

6x=24

x=4