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Simplifying 3r + -4(5r + 7) = 37 + -4r Reorder the terms: 3r + -4(7 + 5r) = 37 + -4r 3r + (7 * -4 + 5r * -4) = 37 + -4r 3r + (-28 + -20r) = 37 + -4r Reorder the terms: -28 + 3r + -20r = 37 + -4r Combine like terms: 3r + -20r = -17r -28 + -17r = 37 + -4r Solving -28 + -17r = 37 + -4r Solving for variable 'r'. Move all terms containing r to the left, all other terms to the right. Add '4r' to each side of the equation. -28 + -17r + 4r = 37 + -4r + 4r Combine like terms: -17r + 4r = -13r -28 + -13r = 37 + -4r + 4r Combine like terms: -4r + 4r = 0 -28 + -13r = 37 + 0 -28 + -13r = 37 Add '28' to each side of the equation. -28 + 28 + -13r = 37 + 28 Combine like terms: -28 + 28 = 0 0 + -13r = 37 + 28 -13r = 37 + 28 Combine like terms: 37 + 28 = 65 -13r = 65 Divide each side by '-13'. r = -5 Simplifying r = -5
| 1/8=4d | | x^(x*x^(1/2))=(x*x^(1/2))^x | | y=cost(5+9) | | 3ln(4x+5)=14 | | 49-(-3)=-5x+10-x | | (7*35)+(x*0.14)=(7*70)+(x*0.07) | | -9=-2(k+5)+-15 | | 2(s+1)=-2 | | -3r+-1=2r+16+-7 | | W/8=-26 | | -(c+14)=2 | | 4x^2-21x-135=0 | | 99=-6m-(7m+5) | | 3x-14+2(x-4)=2x-2 | | 19=2(b+20)-(-17) | | 1.7=0.22 | | (7*35)+(x*.14)=(7*70)+(x*.07) | | 107-11b=-1b+37 | | y-4/-3=9 | | -32(11x)+27(14x)=0+-296 | | 0=16+4x+x^2 | | =(9x)+(3x-5) | | 12=7-3x | | 3d+2d= | | 2(1+6x)+2(3-6x)=7x-3x | | (9x)+(3x-5)= | | 50+60x=-84+210x | | 35+(x*.14)=70+(x*.07) | | 35+2b=5b+11 | | 50000d=238900 | | G(x)=3-x | | x=2+0.2t |