5x+4=x+12
5x-x=-4+12
4x=8
X=8/4
X=2
13-5y=-8-2y
2y-5y=-13-8
-3y=-21
-y=-7
y=7
5x+(3x-7)=9
5x+3x-7=9
5x+3x=9+7
8x=16
X=16/2
X=2
3y-(5-y)=11
3y-5+y=11
3y+y=11+5
4y=16
Y=16/4
Y=4
(7a+1)-(6a+3)=5
7a+1-6a-3=5
7a-6a=5-1+3
A=7
(8s+11)-13=9s-5
8s+11-13=9s-5
8s-9s=-11+13-5
-s=-3
S=3
(5x-3)+(7x-4)=8-(15-11x)
5x-3+7x-4=8-15+11x
5x+7x-11x=3+4+8-15
X=0
(7-5k)-(8-4k)+(5k+6)=8
7-5k-8+4k+5k+6=8
-5k+4k+5k=-7+8-6+8
4k=3
K=3/4
2x+5=2(x+1)+11
2x+5=2x+2+11
2x-2x=-5+2+11
0=8 это
уравнение не имеет значения
5(3x+1.2)+x=6.815x+6+x=6.8
15x+x=6.8-6
16x=0.8
X=0.8/16
X=0.05
0.4b+3=0.2(3b+1)-b
0.4b+3=1.2+0.2-b
0.4b+b=-3+1.2+0.2
1.4b=-1.6
B=-1. 1/7
6(x-1)=9.4-1.7x
6x-6=9.4-1.7x
6x+1.7x=9.4+6
7.7x=15.4
X=2
3.5-9a=2(0.5a-4)
3.5-9a=a-8
9a+a=-3.5-8
10a=-11.5
A=-1.15
3(2.4-1.1m)=2.7m+3.2
7.2-3.3m=2.7m+3.2
-3.3m-2.7m=-7.2+3.2
-6m=-4
-m=-4/6=-2/3
M=2/3
3(x-1)=2(2-x)+6
3x-3=4-2x+6
3x+2x=3+6+4
5x=13
X=13/5
X=2.3/5
4(3-h)-11=7(2h-5)
12-4h-11=14h-35
-4h-14h=-12+11-35
-18h=36
-h=2
H=2
-3(3y-4)+4(2y-1)=0
-9y+12+8y-4=0
-9y+8y=-12+4
-y=-8
Y=8
0.3(5x-7)=3(0.2x+3.2)
1.5x-2.1=0.6x+9.6
1.5x-0.6x=2.1+9.6
0.9x=11.7
X=13
4(1.2b+3.7)-2.8=5.2b
4.8b+14.8-2.8=5.2b
4.8b-5.2b=-14.8+2.8
0.4b=12
B=30
0.9(4y-2)=0.5(3y-4)+4.4
3.6y-1.8=1.5y-2+4.4
3.6y-1.5y=1.8-2+4.4
2.1y=4.2
Y=2
4(0.2x-7)-5(0.3x+6)=5
0.8x-28-1.5x-30=5
0.8x-1.5x=28+30+5
0.7x=63
X=90