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Simplifying 20a + -1(10a + 5a) + 10a + -1(20a + 5a) + 5a + -1(20a + 10a) = 1505 Combine like terms: 10a + 5a = 15a 20a + -1(15a) + 10a + -1(20a + 5a) + 5a + -1(20a + 10a) = 1505 Remove parenthesis around (15a) 20a + -1 * 15a + 10a + -1(20a + 5a) + 5a + -1(20a + 10a) = 1505 Multiply -1 * 15 20a + -15a + 10a + -1(20a + 5a) + 5a + -1(20a + 10a) = 1505 Combine like terms: 20a + 5a = 25a 20a + -15a + 10a + -1(25a) + 5a + -1(20a + 10a) = 1505 Remove parenthesis around (25a) 20a + -15a + 10a + -1 * 25a + 5a + -1(20a + 10a) = 1505 Multiply -1 * 25 20a + -15a + 10a + -25a + 5a + -1(20a + 10a) = 1505 Combine like terms: 20a + 10a = 30a 20a + -15a + 10a + -25a + 5a + -1(30a) = 1505 Remove parenthesis around (30a) 20a + -15a + 10a + -25a + 5a + -1 * 30a = 1505 Multiply -1 * 30 20a + -15a + 10a + -25a + 5a + -30a = 1505 Combine like terms: 20a + -15a = 5a 5a + 10a + -25a + 5a + -30a = 1505 Combine like terms: 5a + 10a = 15a 15a + -25a + 5a + -30a = 1505 Combine like terms: 15a + -25a = -10a -10a + 5a + -30a = 1505 Combine like terms: -10a + 5a = -5a -5a + -30a = 1505 Combine like terms: -5a + -30a = -35a -35a = 1505 Solving -35a = 1505 Solving for variable 'a'. Move all terms containing a to the left, all other terms to the right. Divide each side by '-35'. a = -43 Simplifying a = -43
| 5x=5/75 | | 8-4z=32 | | 2.4(2u-7)+4=10 | | 14-6=7x+53 | | 7/3x=3/x-2 | | 20a+10a-(20a+5a)+5a-(20a+10a)=1505 | | .52=(.050+x)*(.040+x) | | 2y+2x=15 | | 2ln(3x)=18 | | 20x=735 | | 12y+6= | | f(-x)=6(-x)-8 | | X=x/3 | | B=3r+2x | | -270=-9k | | 7w=45-2w | | 48/30=64/x | | 5a-(20a+10a)+10a-(20a+5a)+20a-(10a+5a)=1505 | | x^2+100x+900=0 | | 9=-5000x+45000 | | 16=n/4 | | 3(4y-1)=16+5 | | 5a-(20a-10a)+10a-(20a-5a)+20a-(10a-5a)=1505 | | 8a-9+6a=-31 | | 50=125+25x | | 2y^3-9x^2+3y^2+7x=-6 | | B=2x+3r | | -2*3+5=7*3-22 | | 12/4=z/12 | | 7-y=w/4 | | f(x+8)=6(x+8)-8 | | y=-5000x+45000 |