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Simplifying 20x + 20(x + 7) = 840 Reorder the terms: 20x + 20(7 + x) = 840 20x + (7 * 20 + x * 20) = 840 20x + (140 + 20x) = 840 Reorder the terms: 140 + 20x + 20x = 840 Combine like terms: 20x + 20x = 40x 140 + 40x = 840 Solving 140 + 40x = 840 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-140' to each side of the equation. 140 + -140 + 40x = 840 + -140 Combine like terms: 140 + -140 = 0 0 + 40x = 840 + -140 40x = 840 + -140 Combine like terms: 840 + -140 = 700 40x = 700 Divide each side by '40'. x = 17.5 Simplifying x = 17.5
| (x+5)-2(4x-1)= | | 6(5y-5)-21=2(4y+3)+23 | | 6-6x=7x-9x-22 | | If(x+5)-2(4x-1)= | | 2(n+4)=16 | | 5x-2(x-5)=7x-2 | | 2z/5-4=2 | | X^2-27=6x | | 3z=5z-12 | | -3x^2-4+10=0 | | .40x+.70(400)=.50(400+x) | | z=27-2z | | 7x+2=32 | | 0.7x+13.8=x-2.6 | | 3(z-2)=9 | | n/5+3=5 | | x+.60(2)=.80(x+2) | | 2x^2-x=5x | | ln(x+5)=4.3 | | x+.60(2)=.80 | | z+7=10 | | 7=-12y+3 | | (3x+5)(5x-3)= | | 3x-5=3(x-2)+4 | | 5g-2=9 | | n/8+5=7 | | 2(y-7)=8 | | 2y+4=20 | | 3z=2z+13 | | z^2/3=z/2+5/6 | | 600/12 | | 1/5-x/2=9/10 |