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Simplifying 4(1 + 5r) = -28 (1 * 4 + 5r * 4) = -28 (4 + 20r) = -28 Solving 4 + 20r = -28 Solving for variable 'r'. Move all terms containing r to the left, all other terms to the right. Add '-4' to each side of the equation. 4 + -4 + 20r = -28 + -4 Combine like terms: 4 + -4 = 0 0 + 20r = -28 + -4 20r = -28 + -4 Combine like terms: -28 + -4 = -32 20r = -32 Divide each side by '20'. r = -1.6 Simplifying r = -1.6
| 5/6+1/15 | | 1/2(2)-1=y | | 5/6-7/10 | | 1/6+11/15 | | 525.00+.21x=525.00 | | 4x^2+8x+23=0 | | 5(7-6v)=20 | | 8x-5-4x=-6 | | Log[3](7x-6)=log[3](4x+9) | | 4(x-2)+4x=5x-17 | | 7x+15x=0 | | 52/4+3 | | -8(x+1)=-16 | | 3x+2.75x-10=35 | | 2(x-8)=18 | | 4(n-9)=6(n+7) | | 64=49x^2 | | 5(2n+8)=7(2n+8) | | 5x+(x+35)+(2x-15)=180 | | 5x^2-19+13=0 | | px^2+30x+45=0 | | 6(-8+2x)=12 | | d^2-2d-2=0 | | -2(7x+4)=6 | | x+5/8=11/16 | | -4(6x-2)=-184 | | 7(5-6x)=245 | | -7(9+7x)=35 | | 24.66666667+-2.3333333333y=74 | | 2x-6/4=7 | | (-2/3)x-3-x=8 | | 3x+7y=74 |