a) x+x+10+3(x+10)=100
b)x+x-6+2x=30
a)x+x+10+3(x+10)=100
2x+10+3x+30=100
5x+40=100 |-40
5x=60 |/5
x=12
4x-6=30 |+6
4x=36 |/4
x=9
c)k+k+2+3k=12
5k+2=12 |-2
5k=10 |/5
k=2
d)p+p-2+3*(p-2)
2p-2+3p-6
5p-8
e)1,5c+c=1,5
2.5c=1.5 |/2.5
c=0.6
matma
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a)x+x+10+3(x+10)=100
2x+10+3x+30=100
5x+40=100 |-40
5x=60 |/5
x=12
b)x+x-6+2x=30
4x-6=30 |+6
4x=36 |/4
x=9
c)k+k+2+3k=12
5k+2=12 |-2
5k=10 |/5
k=2
d)p+p-2+3*(p-2)
2p-2+3p-6
5p-8
e)1,5c+c=1,5
2.5c=1.5 |/2.5
c=0.6
matma