Răspuns :
a) x+2*4=8
x+8=8
x=8-8
x=0
b) x+1=30+5*4
x+1=30+20
x=30+20-1
x=49
c) x+16+8*4=49
x+16+32=49
x=49-16-32
x=1
x+8=8
x=8-8
x=0
b) x+1=30+5*4
x+1=30+20
x=30+20-1
x=49
c) x+16+8*4=49
x+16+32=49
x=49-16-32
x=1
a) x+2(a-b)=8
x+2*4=8
x=8-8
x=0
b) X+1=30+5(a-b)
x+1=30+5*4
x+1=50
x=50-1
x=49
c)x+16+8(a-b)=49
x+16+8*4=49
x=49-16-32
x=1
x+2*4=8
x=8-8
x=0
b) X+1=30+5(a-b)
x+1=30+5*4
x+1=50
x=50-1
x=49
c)x+16+8(a-b)=49
x+16+8*4=49
x=49-16-32
x=1