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Simplifying 0.4x + 0.4(20) = 0.3(x + 30) Multiply 0.4 * 20 0.4x + 8 = 0.3(x + 30) Reorder the terms: 8 + 0.4x = 0.3(x + 30) Reorder the terms: 8 + 0.4x = 0.3(30 + x) 8 + 0.4x = (30 * 0.3 + x * 0.3) 8 + 0.4x = (9 + 0.3x) Solving 8 + 0.4x = 9 + 0.3x Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-0.3x' to each side of the equation. 8 + 0.4x + -0.3x = 9 + 0.3x + -0.3x Combine like terms: 0.4x + -0.3x = 0.1x 8 + 0.1x = 9 + 0.3x + -0.3x Combine like terms: 0.3x + -0.3x = 0.0 8 + 0.1x = 9 + 0.0 8 + 0.1x = 9 Add '-8' to each side of the equation. 8 + -8 + 0.1x = 9 + -8 Combine like terms: 8 + -8 = 0 0 + 0.1x = 9 + -8 0.1x = 9 + -8 Combine like terms: 9 + -8 = 1 0.1x = 1 Divide each side by '0.1'. x = 10 Simplifying x = 10
| 0.70x+0.05(2-x)=0.10(40) | | -6t+2x=-10 | | (4x+8)+(3x-6)= | | 36t+2=6(6t-3) | | 1/3(6y-9) | | 14u=17 | | 26-38k=(-9k-3) | | 69+(10x-29)=180 | | 2c^2-c=10 | | 3.2+v=7 | | 10a^6b^6+2ab^4-8ab^6= | | p^2+3p+54=0 | | x+4+9=3+3 | | 2X+3+55+50+2X+8=180 | | 15x^2-10x^2= | | 3+4=x+8 | | 14dh+4hf+8df= | | -0.10(10)+0.10x=0.05(x-6) | | 17x+9=x(x+9) | | 7x^2+8x^2= | | 2.4+v=3.9 | | -3x-45=3(5x+3) | | 5x+6-x=x-2 | | 8x-4y+16=0 | | 18-n-4=n | | 44+(75+37)= | | 2X+8+50=180 | | 8y=6y+12 | | 0.14y+0.07(y+8000)=1190 | | 8a^2+9ab= | | 6x^5-13x^3+14x^2= | | 12=n-51 |