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Simplifying 5x + 21 + -4x = 7 + 5x + -6 Reorder the terms: 21 + 5x + -4x = 7 + 5x + -6 Combine like terms: 5x + -4x = 1x 21 + 1x = 7 + 5x + -6 Reorder the terms: 21 + 1x = 7 + -6 + 5x Combine like terms: 7 + -6 = 1 21 + 1x = 1 + 5x Solving 21 + 1x = 1 + 5x Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-5x' to each side of the equation. 21 + 1x + -5x = 1 + 5x + -5x Combine like terms: 1x + -5x = -4x 21 + -4x = 1 + 5x + -5x Combine like terms: 5x + -5x = 0 21 + -4x = 1 + 0 21 + -4x = 1 Add '-21' to each side of the equation. 21 + -21 + -4x = 1 + -21 Combine like terms: 21 + -21 = 0 0 + -4x = 1 + -21 -4x = 1 + -21 Combine like terms: 1 + -21 = -20 -4x = -20 Divide each side by '-4'. x = 5 Simplifying x = 5
| 0.75x+0.75x+2x=90 | | 4x^2-36+32=0 | | 2x-4x+54=5x+26 | | 6(a-11)=24 | | 1.6*x=20 | | (x+5)*6=42 | | 13+7x=97 | | 1764+x^2=11025 | | 275=15(x-65)+50 | | 26x+32=84 | | 15x-47=28 | | 5/6y=6-11/12y | | x+(x*.13)=50 | | x+z=90 | | 9(x+8)+7=11x-2(x-5) | | 35-4x=19 | | 2(x+6)=6x+7-4x+5 | | 0.7x+0.5y=8 | | 2y=67.5 | | 5(10)+2y=48 | | 3(10)+2y=32 | | 7-(2x-2)(5+x)=2x^2 | | (x-4)/7=(x-10)/5 | | 5(8)+2y=48 | | 3(8)+2y=32 | | 3(4)+2y=32 | | 47+x=36-7x | | 5(20)+2y=48 | | 3(20)+2y=32 | | 3x-4+3x-4=5x+20 | | 2y+3y=90 | | 4u-14=22 |