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t+4=13

We move all terms to the left:

t+4-(13)=0

We add all the numbers together, and all the variables

t-9=0

We move all terms containing t to the left, all other terms to the right

t=9

| -180=20b | | 10f=-60 | | 0=u-8 | | 1=j+8 | | b-5=-14 | | 0=r-7 | | 19=g+10 | | -49=7g | | -4=b-8 | | -9=r-9 | | 192+x=544 | | 643+x=544 | | -20=5j | | 64x3+x=544 | | 4=t+7 | | 3x-2(2x-5)=40 | | e-9=-10 | | 7r+5=118+(7-3r) | | 3=(4x-6)-(9-5x) | | 4=g+5 | | 9u-15=3/1 | | 44x+99x=125 | | 2y-(4-2y)=11 | | 12+3x+12=36 | | 5x-50=62.25 | | 7g-2=8g-5 | | 0.5y-14=-42+0.9y | | 2(x-8)=56 | | 200x+150=1550 | | 3x+6=4x-29=180 | | 9x+4=2x-22=180 | | 5x-14=4x+4=180 |

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