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Simplifying 6(5r + -7) = 4(3r + 7) Reorder the terms: 6(-7 + 5r) = 4(3r + 7) (-7 * 6 + 5r * 6) = 4(3r + 7) (-42 + 30r) = 4(3r + 7) Reorder the terms: -42 + 30r = 4(7 + 3r) -42 + 30r = (7 * 4 + 3r * 4) -42 + 30r = (28 + 12r) Solving -42 + 30r = 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. -42 + 30r + -12r = 28 + 12r + -12r Combine like terms: 30r + -12r = 18r -42 + 18r = 28 + 12r + -12r Combine like terms: 12r + -12r = 0 -42 + 18r = 28 + 0 -42 + 18r = 28 Add '42' to each side of the equation. -42 + 42 + 18r = 28 + 42 Combine like terms: -42 + 42 = 0 0 + 18r = 28 + 42 18r = 28 + 42 Combine like terms: 28 + 42 = 70 18r = 70 Divide each side by '18'. r = 3.888888889 Simplifying r = 3.888888889
| 18n+4*6=134 | | 2u+3=30 | | 2(3b+5)-10b=30 | | 2x+7=35-2x(1dp) | | 3.2+0.17n=5.75 | | 3y=12-5y | | 11-7x=38+-14x | | 9x+7+14x+12=180 | | y+6=.5(x-10) | | 1.75n-(-8)=22 | | 8x-10=54whatisx | | 11-7x=38-14x | | 3x+y=26.8 | | 3x+y=27.8 | | 5y+4=14 | | 5x^2+16x-5=0 | | x+3x=84 | | 10p-7p=18 | | 8-p=17 | | -38-10=9x+19 | | 6-8x-8x-4x^2-x^2=11 | | 10(-16x-8)=3x+24 | | 20v-8=144 | | 4y-2=7+2a | | 20s+30s+10s=120 | | 4y^2-(4-2y-2y-y^2)=11 | | 2x=48x | | 20s+30s+10s=20 | | -3/4(x-4)=5+2x | | 4x-13=6x+7 | | 3t-7=5t+11 | | -6z-8=2 |