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Simplifying 3(2k + 7) = 5(5 + k) Reorder the terms: 3(7 + 2k) = 5(5 + k) (7 * 3 + 2k * 3) = 5(5 + k) (21 + 6k) = 5(5 + k) 21 + 6k = (5 * 5 + k * 5) 21 + 6k = (25 + 5k) Solving 21 + 6k = 25 + 5k Solving for variable 'k'. Move all terms containing k to the left, all other terms to the right. Add '-5k' to each side of the equation. 21 + 6k + -5k = 25 + 5k + -5k Combine like terms: 6k + -5k = 1k 21 + 1k = 25 + 5k + -5k Combine like terms: 5k + -5k = 0 21 + 1k = 25 + 0 21 + 1k = 25 Add '-21' to each side of the equation. 21 + -21 + 1k = 25 + -21 Combine like terms: 21 + -21 = 0 0 + 1k = 25 + -21 1k = 25 + -21 Combine like terms: 25 + -21 = 4 1k = 4 Divide each side by '1'. k = 4 Simplifying k = 4
| -x^2+x+1=5 | | -x^2+2+1=5 | | z(2x+3y)=y(x-z) | | d+e=15 | | 4x+8(x-2)=(17+6)-3 | | 5(p-6)-8p=2-7p | | 3+8p=-3(-1-7p) | | 10(x+2)=5+5x | | 10x-4=12x+6 | | (2a+1)(a-5)= | | (3x+2)-25+9x=3(9-2x)-5(8x+4) | | 5x+3-x=-41 | | 50=6/275 | | -2=-6a-6a^2 | | 10x-2=5+5x | | 5x+13=2x+13 | | 20=6/275 | | 4M+2=4M+6 | | 10ab^2+6b=0 | | (11w-9)-7w=15 | | 4=2p+13+3p | | lne^3= | | 45+7p=5+5(p+4) | | 20=729/275 | | 7+2=63 | | U^2+4=2u^2-4u+11 | | 9x-33=6x+33 | | 2xy-5y=6 | | x^2-2y^2=14 | | 6x-3-2x=4+4x-10 | | 3(x+y)+4(y+x)-2y= | | y=9x+36-14 |