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Simplifying 5x + -21 = 2x Reorder the terms: -21 + 5x = 2x Solving -21 + 5x = 2x Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-2x' to each side of the equation. -21 + 5x + -2x = 2x + -2x Combine like terms: 5x + -2x = 3x -21 + 3x = 2x + -2x Combine like terms: 2x + -2x = 0 -21 + 3x = 0 Add '21' to each side of the equation. -21 + 21 + 3x = 0 + 21 Combine like terms: -21 + 21 = 0 0 + 3x = 0 + 21 3x = 0 + 21 Combine like terms: 0 + 21 = 21 3x = 21 Divide each side by '3'. x = 7 Simplifying x = 7
| (-7x^2+4x-3)(-7x+3)= | | 0.25y-1.7=0.15y+1-0.8y | | (-7x*2+4x-3)(-7x+3)= | | -70+5x=15 | | x^2-190x+6000=0 | | 1/3(x+4)=1/4(x-6)+1 | | 8.00(4+x)=72.00 | | 9m-15=-36+2m | | 8c-7c-3c-12c-20=-10 | | 8x-21=11+10x | | 10=2x+b | | 4x/3-10=-11+2x | | (5x^2-2x-1)+(2x-8x^2+4)= | | 8x-21=11x+10x | | (-(8a-13x)/6a)-((11a+7x)/6a) | | 5x+5=3x+9 | | 2(2m-65)-m=-25 | | -3/5x=9/5 | | x^4+2x^3-15x^2= | | y^2-49x^2+4y+4=0 | | 2p+3=17 | | (6p-1)(5p+5)= | | 2p-3=17 | | 31u-u+5u+9u=-34 | | 5t+3t+5=0 | | 5x-2x-7=3 | | -31u-u+5u+9u=-34 | | 7x-25=2x+60 | | (3x^2y^4)(4xy^2)=0 | | (x+3)/(x+4)+(1/3)=((x-1)/(x+4)) | | 2a+2/3=a+1/4 | | 31u-u+5u+9u=34 |