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Simplifying -7r + -12r = 0 Combine like terms: -7r + -12r = -19r -19r = 0 Solving -19r = 0 Solving for variable 'r'. Move all terms containing r to the left, all other terms to the right. Divide each side by '-19'. r = 0 Simplifying r = 0
| (-7r)-12r= | | (9x+90)+5=113 | | -10+-2x=6 | | 4x+4=64 | | -4x+20=60 | | -5+12c=2a+b | | 11/10=x/14 | | 4+(7x-84)=-38 | | 3*(x-6)=18 | | 4+(7x-77)=-59 | | 4+(7x-11)=-59 | | 1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000x=1 | | -66+n=-102 | | 42x*3=1.4 | | (3x+33)+5=68 | | 8x+32=96 | | 9x+81=135 | | 2m*3n= | | z^9+z^6+2=0 | | 2(4-x)-(3+3x)= | | -2X+11X=81 | | -2X+11=81 | | 2x+(-6)=-24 | | 3+8X+2=87 | | 2x+2+7x=36 | | 2(4x-6)=6 | | 5c+6=1 | | 8x+11=35 | | 5X-X=-28 | | 14y+5=61 | | -11=-10a+19 | | -3X+11X=64 |