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Simplifying 2(5r + -7) = 4(3r + 7) Reorder the terms: 2(-7 + 5r) = 4(3r + 7) (-7 * 2 + 5r * 2) = 4(3r + 7) (-14 + 10r) = 4(3r + 7) Reorder the terms: -14 + 10r = 4(7 + 3r) -14 + 10r = (7 * 4 + 3r * 4) -14 + 10r = (28 + 12r) Solving -14 + 10r = 28 + 12r Solving for variable 'r'. Move all terms containing r to the left, all other terms to the right. Add '-12r' to each side of the equation. -14 + 10r + -12r = 28 + 12r + -12r Combine like terms: 10r + -12r = -2r -14 + -2r = 28 + 12r + -12r Combine like terms: 12r + -12r = 0 -14 + -2r = 28 + 0 -14 + -2r = 28 Add '14' to each side of the equation. -14 + 14 + -2r = 28 + 14 Combine like terms: -14 + 14 = 0 0 + -2r = 28 + 14 -2r = 28 + 14 Combine like terms: 28 + 14 = 42 -2r = 42 Divide each side by '-2'. r = -21 Simplifying r = -21
| 3(x+8)=2(13+x) | | 7w=4w+15 | | 9x=(-108) | | 47-x=9 | | (12x-6)=6 | | 5x-12=3x-18 | | (2x+1)+47=180 | | 0=ln(4-x^2) | | (J-3.2)7=8.4 | | F(r)=60-2/3r | | 12y^3+33y^2-6y= | | (5x+10)+40=180 | | J-3.2*7=8.4 | | 3x+38=7x-2 | | -7y-8=y+24 | | (2x1/4)4 | | 134.4=.4(0.09)x+.6(0.08)y | | ln(4-x^2)=o | | -4(-21)= | | ((2x-10)/(3))((3/2)x-5) | | 18+3y=y^2 | | 2x+205=3x+195 | | 5*(-12)= | | m*7+23=135 | | 5x(-12)= | | 10x5y3/2x6y | | 5(2a-2b)+4(2a+4b)= | | 1/3x-5/4=-9/5 | | 28x-10=26x+8 | | [0.5m+1]=3 | | [2x+14]=8 | | (7x-2)=40 |