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Simplifying 3 + 21 = 15 Combine like terms: 3 + 21 = 24 24 = 15 Solving 24 = 15 Couldn't find a variable to solve for. This equation is invalid, the left and right sides are not equal, therefore there is no solution.
| 3+21=21 | | 0.625(a-2)= | | m+3(m-4)=20 | | 4(5-x)=-(1+x) | | 2+4(x+6)=4(2x+3)+6 | | 7(4+n)=4n+37 | | 2(m+5)=16 | | 54+2x=180 | | 4(2x+3)=11x+6 | | 20=5y+5 | | 180=2x-18 | | 525.00+0.21x=600 | | 2t+7=t+9 | | 76-x=3x | | 7n+2=5n+20 | | 9x+4=8x+7 | | 4t^2+48t=160 | | -2v^2-1v+12=-3v^2+6v | | 2x+4y+.25z=100 | | (-8/5)x-6=-54 | | 4m+4=4(m+1) | | 6x-4+4x-6=180 | | 2x+46+x-18+x=180 | | y^2+2xy-3x^2=0 | | 525.00+0.21x=850.00+0.31x | | 2x+46+x-18=180 | | 525.00+0.21x=850.00+0.31 | | 6x-4+7x-4+5x+8=180 | | 12+6q(5-q)= | | -(1+6k)+4k=-8k-7(k+2) | | 117=8x+57 | | x+-5.5-4(5)=-18 |