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Simplifying 2(2a + -8) + 7 = 5(a + 2) + -3a + -19 Reorder the terms: 2(-8 + 2a) + 7 = 5(a + 2) + -3a + -19 (-8 * 2 + 2a * 2) + 7 = 5(a + 2) + -3a + -19 (-16 + 4a) + 7 = 5(a + 2) + -3a + -19 Reorder the terms: -16 + 7 + 4a = 5(a + 2) + -3a + -19 Combine like terms: -16 + 7 = -9 -9 + 4a = 5(a + 2) + -3a + -19 Reorder the terms: -9 + 4a = 5(2 + a) + -3a + -19 -9 + 4a = (2 * 5 + a * 5) + -3a + -19 -9 + 4a = (10 + 5a) + -3a + -19 Reorder the terms: -9 + 4a = 10 + -19 + 5a + -3a Combine like terms: 10 + -19 = -9 -9 + 4a = -9 + 5a + -3a Combine like terms: 5a + -3a = 2a -9 + 4a = -9 + 2a Add '9' to each side of the equation. -9 + 9 + 4a = -9 + 9 + 2a Combine like terms: -9 + 9 = 0 0 + 4a = -9 + 9 + 2a 4a = -9 + 9 + 2a Combine like terms: -9 + 9 = 0 4a = 0 + 2a 4a = 2a Solving 4a = 2a Solving for variable 'a'. Move all terms containing a to the left, all other terms to the right. Add '-2a' to each side of the equation. 4a + -2a = 2a + -2a Combine like terms: 4a + -2a = 2a 2a = 2a + -2a Combine like terms: 2a + -2a = 0 2a = 0 Divide each side by '2'. a = 0 Simplifying a = 0
| 2(w)+1(2w-40)=220 | | 8x^2+8x=10 | | (4x-10)=50 | | -5x+7(-4x+16)=-185 | | 12x^2+7x-381=0 | | x^4-100x^2+2304=0 | | 4m-18=-2m | | -3.3+1.1z=-8.8 | | 2/3x-2/3=x/6 | | 2(w)+2(3w-12)=40 | | -3x-6y=10 | | 5+4a=5a | | -4a+a-11=22 | | 9(x+3)=-9 | | -42-6m=m-12 | | 4m+6-6m+2=12 | | 4.5r=3.2+4.5r | | -8=-6-1/2n | | 8x+2-3x=32 | | 15x+8x=7x-8 | | 2/9÷3/7= | | -4.5=15+1.5y | | 4x^3-6x-8=0 | | 3z+2.5=3.2+3z | | 2/3n=-2 | | 3b+1=2b+7 | | 5(x+3)+10x+25(2x)= | | 2=8+5 | | 2y^2-y^2=48 | | 3.6=0.72(a+6) | | 3x+2+7x=52 | | 0.72(y+6)=3.6 |