Question

1. 4(x+12)-3(x+4)=2(x+5)
2. 5x + 16-4x(x+4)=2(x+9)
3. 4(x+5)+3(x+3)=2(x+15)
4. 5(x+2)+4(x-3)=3(x+8)-14
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Answer 1

1) 4x+4·12-3x-3·4=2x+2·5
4x+48-3x-12=2x+10
x+36=2x+10
x-2x=10-36
-x=-26    inmultim -1
x=26

2) 5x+16-4x-16=2x+18
x=2x+18
x-2x=18
-x=18       inmultim -1
x=-18

3) 4x+20+3x+9=2x+30
7x+29=2x+30
7x-2x=30-29
5x=1
x=1/5

4) 5x+10+4x-12=3x+24-14
9x-2=3x+10
9x-3x=10+2
6x=12
x=12/6
x=2