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Simplifying 18 + -1(2a + -5) + -1(a + 2) = 3a + 5 Reorder the terms: 18 + -1(-5 + 2a) + -1(a + 2) = 3a + 5 18 + (-5 * -1 + 2a * -1) + -1(a + 2) = 3a + 5 18 + (5 + -2a) + -1(a + 2) = 3a + 5 Reorder the terms: 18 + 5 + -2a + -1(2 + a) = 3a + 5 18 + 5 + -2a + (2 * -1 + a * -1) = 3a + 5 18 + 5 + -2a + (-2 + -1a) = 3a + 5 Reorder the terms: 18 + 5 + -2 + -2a + -1a = 3a + 5 Combine like terms: 18 + 5 = 23 23 + -2 + -2a + -1a = 3a + 5 Combine like terms: 23 + -2 = 21 21 + -2a + -1a = 3a + 5 Combine like terms: -2a + -1a = -3a 21 + -3a = 3a + 5 Reorder the terms: 21 + -3a = 5 + 3a Solving 21 + -3a = 5 + 3a Solving for variable 'a'. Move all terms containing a to the left, all other terms to the right. Add '-3a' to each side of the equation. 21 + -3a + -3a = 5 + 3a + -3a Combine like terms: -3a + -3a = -6a 21 + -6a = 5 + 3a + -3a Combine like terms: 3a + -3a = 0 21 + -6a = 5 + 0 21 + -6a = 5 Add '-21' to each side of the equation. 21 + -21 + -6a = 5 + -21 Combine like terms: 21 + -21 = 0 0 + -6a = 5 + -21 -6a = 5 + -21 Combine like terms: 5 + -21 = -16 -6a = -16 Divide each side by '-6'. a = 2.666666667 Simplifying a = 2.666666667
| 6u+7=4u | | 18-12p= | | .5x+3=1.5x-5 | | -5r+10r-9=1 | | 2(3y-13)= | | 6(x-6)+4=8(x+2)-4 | | 12b+10c= | | 3(5+6x+x^2)=0 | | 9h-8=2(-h+6) | | 6y-26= | | 7p(2p+3)-8=6p+29 | | 3+4.5n= | | -x+50=x+60 | | 3(6-x)=0 | | s-6=-5s | | 5(q-3)= | | 360=2x+1+5x-5 | | 18a-(8a-7)=67 | | 56x^2+11x-15=0 | | 100=x-(x*0.029)-.3 | | 5n-8=-3 | | x^2+7x+3=1 | | p^2-21=0 | | z^8=i | | 15-5q= | | 1.36*0.7= | | 100=(x*0.029)+.3 | | 100=x*0.029+.3 | | x^2+6x+12=5 | | p+q+r=180 | | 4ab*2c= | | 5+4=44 |