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Simplifying (3a + b) + (3a + -2b) = 13 Remove parenthesis around (3a + b) 3a + b + (3a + -2b) = 13 Remove parenthesis around (3a + -2b) 3a + b + 3a + -2b = 13 Reorder the terms: 3a + 3a + b + -2b = 13 Combine like terms: 3a + 3a = 6a 6a + b + -2b = 13 Combine like terms: b + -2b = -1b 6a + -1b = 13 Solving 6a + -1b = 13 Solving for variable 'a'. Move all terms containing a to the left, all other terms to the right. Add 'b' to each side of the equation. 6a + -1b + b = 13 + b Combine like terms: -1b + b = 0 6a + 0 = 13 + b 6a = 13 + b Divide each side by '6'. a = 2.166666667 + 0.1666666667b Simplifying a = 2.166666667 + 0.1666666667b
| A/8+9=17 | | s^2+12s+21=0 | | -3y2/27y-9 | | B+-2b= | | (s+6)2=15 | | (3x)2/27x | | y+1/y=2 | | 10+3b^2=4b | | (2/x+1)(3/x-1)=4 | | 24x/15 | | 0.90x+0.05(12-x)=0.10(108) | | (3a-3)*3=7a+1 | | 3x-5+4(4x-3)= | | 3(3-x)=2(3-x) | | 4t-11=0 | | 3(x+2)+2(x-4)=4x+1 | | a+1/2(v+t)y | | 2*(3x-4)=5x-3 | | (t+2)2+(t-3)2=9 | | x%*50+x%*25=10 | | x(x+5)=2 | | 2x^2=2-5x | | -8x-15=21 | | a+2b=3a+6b | | a+2b=0 | | 19-2x=11+8x | | 121.64=26.69*x^2 | | 4-(2x-3)=(x+12)+4 | | 121.64=26.69*x | | 2+x/8=30/12 | | 18/117 | | 32/104 |