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Simplifying (s + 4) + (s + 2 + 4) = 40 Reorder the terms: (4 + s) + (s + 2 + 4) = 40 Remove parenthesis around (4 + s) 4 + s + (s + 2 + 4) = 40 Reorder the terms: 4 + s + (2 + 4 + s) = 40 Combine like terms: 2 + 4 = 6 4 + s + (6 + s) = 40 Remove parenthesis around (6 + s) 4 + s + 6 + s = 40 Reorder the terms: 4 + 6 + s + s = 40 Combine like terms: 4 + 6 = 10 10 + s + s = 40 Combine like terms: s + s = 2s 10 + 2s = 40 Solving 10 + 2s = 40 Solving for variable 's'. Move all terms containing s to the left, all other terms to the right. Add '-10' to each side of the equation. 10 + -10 + 2s = 40 + -10 Combine like terms: 10 + -10 = 0 0 + 2s = 40 + -10 2s = 40 + -10 Combine like terms: 40 + -10 = 30 2s = 30 Divide each side by '2'. s = 15 Simplifying s = 15
| 6a-9=21 | | 2a+5=4a-3 | | -5y+10=-2+6y+2 | | 2+2x+5x=-5 | | 7x+2=6(x-3)+7 | | 1/7x+1/5=1/5x-1/7 | | 4x-5y=-180 | | 6r-2=6r | | 4x+3-2x=9 | | -6n+5n=4 | | 4.9t^2+9t+3=0 | | -2z(5z-4)+6z=-4 | | 2.5r-(2-5r)=2.6+6.1r | | 7x+24=x^2+12 | | 7xy+63x+14y= | | X^2-7=5x | | 5d^2-2d-8=0 | | -2(x-1)+(x-14)=-x-14 | | 12x^2-96x=144 | | 6z+4=9z+9 | | 4.9t+9t+3=0 | | 3z+5=9z+9 | | 3x^2+24x+48=8 | | 100+.30x=80+.80x | | 4p^2=-12p-9 | | 2(3a+4)=6 | | 2a-9=4(3a+1)-6 | | 6x^2+26x=-28 | | 40x^2-88x+48= | | 2(5x-13)-x=3(x-3)+7 | | 2m+6-4m=6 | | 4a-21=7a |