1. 2x+28=82
2x=82—28
2x=54
x=27
2. x+x+150=1230
2x=1230—150
2x=1080
x=540
3. 2(xx)—5(xx)=33
2(10x+x)—5(10x+x)=33
2(11x)—5(11x)=33
22x—55x=33
—33x=33
x=—1
4. 13x+17x=180
30x=180
x=6
5. xx+(xx+1)=27
2(xx)+1=27
2(xx)=26
xx=13
6. x+(x+1)=—13
2x+1=—13
x=—7
7. 2x+(2x—1)=66
x=67/4
8. x+(x+3)=35
2x+3=35
2x=32
x=16
9. 4x=24
x=6 , recuerda que el cuadrado tiene cuatro lados iguales.
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1. 2x+28=82
2x=82—28
2x=54
x=27
2. x+x+150=1230
2x=1230—150
2x=1080
x=540
3. 2(xx)—5(xx)=33
2(10x+x)—5(10x+x)=33
2(11x)—5(11x)=33
22x—55x=33
—33x=33
x=—1
4. 13x+17x=180
30x=180
x=6
5. xx+(xx+1)=27
2(xx)+1=27
2(xx)=26
xx=13
6. x+(x+1)=—13
2x+1=—13
x=—7
7. 2x+(2x—1)=66
x=67/4
8. x+(x+3)=35
2x+3=35
2x=32
x=16
9. 4x=24
x=6 , recuerda que el cuadrado tiene cuatro lados iguales.