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Simplifying 3(r + 7) + 6r = 48 Reorder the terms: 3(7 + r) + 6r = 48 (7 * 3 + r * 3) + 6r = 48 (21 + 3r) + 6r = 48 Combine like terms: 3r + 6r = 9r 21 + 9r = 48 Solving 21 + 9r = 48 Solving for variable 'r'. Move all terms containing r to the left, all other terms to the right. Add '-21' to each side of the equation. 21 + -21 + 9r = 48 + -21 Combine like terms: 21 + -21 = 0 0 + 9r = 48 + -21 9r = 48 + -21 Combine like terms: 48 + -21 = 27 9r = 27 Divide each side by '9'. r = 3 Simplifying r = 3
| X+27=-31 | | (7x+2)(3x^2-14x-5)=0 | | x-7-2x=12 | | -7d=50+2d | | (9x-8)+8=(3x+10)+8 | | 13x+50=-54 | | 12x-84=12x | | 3x+12=8x-8 | | 4y=y-20 | | 8v-3+3v=8 | | 0.66x-34=32 | | 87=13-2x | | -5(2x+4)=(-2-x) | | -6+11-3x=-34 | | 8a-7=4a+9 | | .5x-5=-9 | | 16+3y=22 | | 12k-3(k+5)=48 | | 8p-12q= | | 10=14+4(x-2) | | 8(x+3)+13=29 | | -(8y+5)-(-7y-7)=-3 | | -7=7(a-3) | | 5v-3(v+4)=0 | | 2y(7y+2)(8y+7)=0 | | 5(p-7)-15=3p+12 | | 65=17-14b-4b | | 4n+40=129 | | 9(2x-9)=3(6x+6) | | .5(y-10)+y=10 | | -4(4y+2)= | | x-0.30x=98 |