Объяснение:
2,5(0,2+x)-0,5(x-0,7)-0,2=0,5
0,5+2,5x-0,5x+0,35-0,2-0,5=0
2x=-0,15
x=0,075
1/4(2-3x)=3/8(x+1)-1
1/2-3x/4=3x/8+3/8-1
-3x/4-3x/8=3/8-1-1/2
-9/8x=-9/8
x=1
ответ:(5/2×1/5+5/2х)-(1/2х-1/2×7/10)=(25/10×2/10+5/2х)-(1/2х-5/10×7/10)=(5+2.5х)-(0.5х-3.5)=5+2.5х-0.5х+3.5=8.5+2х.
8.5+2х=0.5
2х=-8
Х=-4
Объяснение:1/4(2-3х)=3/8(х+1)-1
2/4-3/4х=3/8х+3/8-1
2/4-3/8+1=3/8х+3/4х
1+1/8=9/8х
(1+1/8)=(1+1/8)х
Х=(1+1/8)/(1+1/8)
Х=1
Объяснение:
2,5(0,2+x)-0,5(x-0,7)-0,2=0,5
0,5+2,5x-0,5x+0,35-0,2-0,5=0
2x=-0,15
x=0,075
1/4(2-3x)=3/8(x+1)-1
1/2-3x/4=3x/8+3/8-1
-3x/4-3x/8=3/8-1-1/2
-9/8x=-9/8
x=1
ответ:(5/2×1/5+5/2х)-(1/2х-1/2×7/10)=(25/10×2/10+5/2х)-(1/2х-5/10×7/10)=(5+2.5х)-(0.5х-3.5)=5+2.5х-0.5х+3.5=8.5+2х.
8.5+2х=0.5
2х=-8
Х=-4
Объяснение:1/4(2-3х)=3/8(х+1)-1
2/4-3/4х=3/8х+3/8-1
2/4-3/8+1=3/8х+3/4х
1+1/8=9/8х
(1+1/8)=(1+1/8)х
Х=(1+1/8)/(1+1/8)
Х=1