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Simplifying 21 + -13 = 7 + x Combine like terms: 21 + -13 = 8 8 = 7 + x Solving 8 = 7 + x Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-1x' to each side of the equation. 8 + -1x = 7 + x + -1x Combine like terms: x + -1x = 0 8 + -1x = 7 + 0 8 + -1x = 7 Add '-8' to each side of the equation. 8 + -8 + -1x = 7 + -8 Combine like terms: 8 + -8 = 0 0 + -1x = 7 + -8 -1x = 7 + -8 Combine like terms: 7 + -8 = -1 -1x = -1 Divide each side by '-1'. x = 1 Simplifying x = 1
| F+(-1)=0 | | 6-12lnx=15 | | -18-4x=2(x+4) | | 9=5x-6 | | 2(z+6)=2(z-4) | | 6+0.1=0.15x+8 | | (4x+5)+41=180 | | f/-14=-8 | | (k+6)=3 | | 6-(1/5)y=7 | | 14(2t+1)-16=t-(t+1) | | -3*b=36 | | -6=c/24 | | 4.8x-5=3.8x | | 13=z/5 | | 0.3p+1.75=6.25 | | -10=6+d | | x+1/2=71/4 | | 3x-5y-11=0 | | 3(8t+1)-5=t-(t+1) | | -3x/-5 | | 4=j/-3-8 | | -35+x=-6 | | 4x-5=5x+9 | | 2x^2-25x-20=0 | | -9x+8-10x=3-2x | | log(3)x=4 | | 7y-3=4(6y-5) | | 4(9-x)-46=16x-5(2+4x) | | 5/9x+2/3=8/9 | | 9*h=-36 | | -4.8+b+0.6=1.8+3.6b |