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| -21x+9x=0 | | 12.6x-3.5x=-145.6 | | 9(t-5)+3t=4(3t+3)-11 | | 30-19x-5x^2=0 | | x+-8=-1 | | cn=(-3)n | | 6.4x-2.1x=-129 | | 79+9x=85+6x | | 2X^4+x^2+2x-3=0 | | an=(n+4)2 | | 2x+2.3=7.3 | | 2.5/x=2/0.4 | | 3x^3+9x^2-7x-4=9 | | -(4a-2)+3a-7= | | 4+88=0 | | 22*4=0 | | -1.3=1.7-3y | | -(3a-2)+2a-7= | | 5cos(x)-1=1 | | 18(6c-1)-10=106+18 | | 8-30=0 | | 35=4y-13 | | 37x+42=y | | 3x+x^2-54=0 | | -(6x-8)+6x= | | 32x+42=y | | 0.4x1/2 | | logex^3=3 | | -8+104=0 | | 3ba^7/b^5a^4 | | 0.03(2c-74)=-0.6(c-4) | | 9=-9y+24 |