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Simplifying (r + -6) + 5r + (3r + -3) = 180 Reorder the terms: (-6 + r) + 5r + (3r + -3) = 180 Remove parenthesis around (-6 + r) -6 + r + 5r + (3r + -3) = 180 Reorder the terms: -6 + r + 5r + (-3 + 3r) = 180 Remove parenthesis around (-3 + 3r) -6 + r + 5r + -3 + 3r = 180 Reorder the terms: -6 + -3 + r + 5r + 3r = 180 Combine like terms: -6 + -3 = -9 -9 + r + 5r + 3r = 180 Combine like terms: r + 5r = 6r -9 + 6r + 3r = 180 Combine like terms: 6r + 3r = 9r -9 + 9r = 180 Solving -9 + 9r = 180 Solving for variable 'r'. Move all terms containing r to the left, all other terms to the right. Add '9' to each side of the equation. -9 + 9 + 9r = 180 + 9 Combine like terms: -9 + 9 = 0 0 + 9r = 180 + 9 9r = 180 + 9 Combine like terms: 180 + 9 = 189 9r = 189 Divide each side by '9'. r = 21 Simplifying r = 21
| k=48x-9x^2 | | 3(a+b-c)= | | -21+5= | | 3(x-1/2)+4(1-2x)/3=x/4-5(x-1)/2 | | 5x-8(x-5)=1.6-3x | | x(15)=5 | | (78)(-4)= | | 3(x+2)+4(3+x)-3=7x | | x(15)=20 | | 150=w(4w-1) | | 9x^2-48x+k=0 | | 6x+50=3x+40 | | 5n+n=4(2n-5)-2(n-7) | | 4w^2-w-150=0 | | 3x^2+24x=16 | | 7(1-2n)+7=7(2-3n) | | -3x-7(-x+5)=1 | | -12=4+c | | X^3+16=-984 | | 2x-5+29=12 | | -4r-9+11s-3r+15s= | | 12+90+x=180 | | 500=2.5v-500 | | 8(x+3)+4(2+x)-8=12x | | 12x+8y=4x-2y | | 3x+25=86 | | 4x^2-80x+86=0 | | 3b-18=-9 | | 3-3/4x=1/2x | | 8+10b+7b+3= | | 7(c-5)=-21 | | P=2.5(200)-500 |