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Simplifying 5 + 3(r + -4) = 2(r + 1) Reorder the terms: 5 + 3(-4 + r) = 2(r + 1) 5 + (-4 * 3 + r * 3) = 2(r + 1) 5 + (-12 + 3r) = 2(r + 1) Combine like terms: 5 + -12 = -7 -7 + 3r = 2(r + 1) Reorder the terms: -7 + 3r = 2(1 + r) -7 + 3r = (1 * 2 + r * 2) -7 + 3r = (2 + 2r) Solving -7 + 3r = 2 + 2r Solving for variable 'r'. Move all terms containing r to the left, all other terms to the right. Add '-2r' to each side of the equation. -7 + 3r + -2r = 2 + 2r + -2r Combine like terms: 3r + -2r = 1r -7 + 1r = 2 + 2r + -2r Combine like terms: 2r + -2r = 0 -7 + 1r = 2 + 0 -7 + 1r = 2 Add '7' to each side of the equation. -7 + 7 + 1r = 2 + 7 Combine like terms: -7 + 7 = 0 0 + 1r = 2 + 7 1r = 2 + 7 Combine like terms: 2 + 7 = 9 1r = 9 Divide each side by '1'. r = 9 Simplifying r = 9
| 3xy-6x^2y^3=0 | | x^2+2015=y^2 | | 90000*x=10000 | | 10(12a-11)=20a+16 | | 10x-2=2x+9 | | 51z-5-29z+23=-114 | | 4k-3=4k | | 5z-5-29z+23=-114 | | 3y-4y=-20 | | 7.05x*100=-3.15x | | 7.05x-100=-3.15 | | 4(x+1)-2=6 | | y=8ln(x-8) | | 7[9-7(8-y)]-9= | | 3x-30+2x=180 | | -3-5*x+x^4=0 | | 256s^4=1 | | 8k-k+7-8=-36 | | 15-2x=x+4 | | 9(6-x)+1=(x-4)+27 | | 51z-5-29z+23=114 | | -25j-17-18j=284 | | V=(24-2x)(16-2x)(H) | | x^3+6x+13x=0 | | 16k^2-4k-8=0 | | 8x+8=-2 | | =9[7(9z-8)+6]-82 | | 8q-1=5q+15 | | 4(x-4)+4(x-1)=5(x-1)(x-4) | | 5p-16=2p+2 | | 7[9-7(8-z)]-9= | | 1a=5 |