1.а)х=3
б)у=6
в)z=18
2.a) 5(2x+1)+2(3x+8)=10x+5+6x+16=16x+21
б)5(2х+1)+2(3х+8)=69
10х+5+6х+16=69
16х=69-21
16х=48
х=3
3.а)n+(n+m)
б)n=29,m=17
29+(29+17)=29+46=75
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1.а)х=3
б)у=6
в)z=18
2.a) 5(2x+1)+2(3x+8)=10x+5+6x+16=16x+21
б)5(2х+1)+2(3х+8)=69
10х+5+6х+16=69
16х=69-21
16х=48
х=3
3.а)n+(n+m)
б)n=29,m=17
29+(29+17)=29+46=75