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Simplifying 10d + 10(d + 3) = 130 Reorder the terms: 10d + 10(3 + d) = 130 10d + (3 * 10 + d * 10) = 130 10d + (30 + 10d) = 130 Reorder the terms: 30 + 10d + 10d = 130 Combine like terms: 10d + 10d = 20d 30 + 20d = 130 Solving 30 + 20d = 130 Solving for variable 'd'. Move all terms containing d to the left, all other terms to the right. Add '-30' to each side of the equation. 30 + -30 + 20d = 130 + -30 Combine like terms: 30 + -30 = 0 0 + 20d = 130 + -30 20d = 130 + -30 Combine like terms: 130 + -30 = 100 20d = 100 Divide each side by '20'. d = 5 Simplifying d = 5
| 10=(5+x)*1.12 | | 11.25x=3.75 | | (5w-6)(5+w)=0 | | 3x+24+5x=7x+242 | | y=2-1-5 | | 24+5x=54 | | 72/x=3 | | y=2-2-5 | | 3x+5x-4=20 | | 3ln(x+2)=6-lne | | c(c+17)=-60 | | 151/3-4/5 | | -8+3p=7p+6 | | 13=4x+20 | | 2m^2+m-5=2m+7 | | 2(3x+199)=18 | | 2x^4/6x^5 | | -13+c=20 | | 2x(3x+199)=18 | | 9y^2-6xy+x^2= | | 2(x+3)=3(x-10) | | 17x+21y=5e | | (m+3)+(m+4)= | | -14+4=11y+12-10y | | 12n-9-11n-14=-7 | | (5k+2)(k+1)=0 | | -12=8v+4(v-8) | | 2m+20=3m+9 | | 4x-9=-5x-3(9) | | 5c-12c-15-7+18c=2-10+7c+8c-14 | | 4(2)-y=-5(2)-3y | | 4L-3.6=32 |