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Simplifying (3a + 4) + (a + 4) + (a + 7) = 50 Reorder the terms: (4 + 3a) + (a + 4) + (a + 7) = 50 Remove parenthesis around (4 + 3a) 4 + 3a + (a + 4) + (a + 7) = 50 Reorder the terms: 4 + 3a + (4 + a) + (a + 7) = 50 Remove parenthesis around (4 + a) 4 + 3a + 4 + a + (a + 7) = 50 Reorder the terms: 4 + 3a + 4 + a + (7 + a) = 50 Remove parenthesis around (7 + a) 4 + 3a + 4 + a + 7 + a = 50 Reorder the terms: 4 + 4 + 7 + 3a + a + a = 50 Combine like terms: 4 + 4 = 8 8 + 7 + 3a + a + a = 50 Combine like terms: 8 + 7 = 15 15 + 3a + a + a = 50 Combine like terms: 3a + a = 4a 15 + 4a + a = 50 Combine like terms: 4a + a = 5a 15 + 5a = 50 Solving 15 + 5a = 50 Solving for variable 'a'. Move all terms containing a to the left, all other terms to the right. Add '-15' to each side of the equation. 15 + -15 + 5a = 50 + -15 Combine like terms: 15 + -15 = 0 0 + 5a = 50 + -15 5a = 50 + -15 Combine like terms: 50 + -15 = 35 5a = 35 Divide each side by '5'. a = 7 Simplifying a = 7
| 10(x)-5=6(x)-18 | | 3a+4+a+4+a+7=50 | | (x+6)+(2x+4)+(x+2)=32 | | -9=6(y+4) | | (x/5)+x=180 | | (x/3)+x=180 | | (x/2)+x=180 | | 140=7x+4x+3x | | 7(a+9)=4[a-(6-a)] | | 4/5D-4=16 | | 450000-22000=0 | | 450000x-22000= | | 3/4A+5=17 | | 8(a+10)=6[a-(3-a)] | | 170=3x+3x+4x | | 5x+5x+8x=180 | | 5x+13=6x+4 | | 7x+8=11x-8 | | 2a+3=10 | | 2x^2-x+17=0 | | ab-15=53 | | 11-5x/2 | | 3(x-4)=7x-10 | | -2x+6x-80-36/4+8x-7 | | x(1.4+x)=2.6 | | 90+4y=-6y | | -2x+6x-8=-36/4+8x-7 | | 6w+15w^3= | | 1680x+35000=300440 | | 180-x=2(90-x)-10 | | 550x+175000=1680x+35000 | | p=2(92)+2(145) |