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Simplifying 21x + -13 = 17x + 7 Reorder the terms: -13 + 21x = 17x + 7 Reorder the terms: -13 + 21x = 7 + 17x Solving -13 + 21x = 7 + 17x Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-17x' to each side of the equation. -13 + 21x + -17x = 7 + 17x + -17x Combine like terms: 21x + -17x = 4x -13 + 4x = 7 + 17x + -17x Combine like terms: 17x + -17x = 0 -13 + 4x = 7 + 0 -13 + 4x = 7 Add '13' to each side of the equation. -13 + 13 + 4x = 7 + 13 Combine like terms: -13 + 13 = 0 0 + 4x = 7 + 13 4x = 7 + 13 Combine like terms: 7 + 13 = 20 4x = 20 Divide each side by '4'. x = 5 Simplifying x = 5
| 7n=35 | | -6-(2n)=3n-6+5 | | 4x+32=6x+14 | | -18c+20c= | | 12x+7=7x+42 | | 18c+20c= | | 2x-6-13x=71 | | 2(5k+3)-12k+6+3= | | 4(x+5)-7=2(x+3) | | 9(R+7)+12*R= | | 2t+6-4= | | 4(3-3x)-8x=15-2(5x+8) | | -2k+3k-4+2k= | | 7(-2+1)=-15c+3(-13c-11) | | -9(2g-13)=-12g+9 | | 9(R+7)+12R= | | p-2p= | | -4-(2-6p)= | | 2(-9u+9)=-16u-8 | | 13r+s-20r+20s= | | -4(10z+4)=-6(-8+12z) | | 14x+6=-22 | | -0.2(x+1)=0.3(x+11) | | 10q=5(-8q-10) | | -3(4y-8)+2(2y+10)= | | 3x^2+12x+5=0 | | -3.82-2.6k=3.95+1.3k-1.8k | | 4(-xy^6)(x^2y)= | | -9a+10w= | | -8.9d-1.67=-8.8d | | -6(n-3)+4(n+1)= | | -9c+12=-5+6c |