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16-03-2021
Mathematics

contestada

solve for z
–1.3(z + 7) = –3.9

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16-03-2021

Z=-10 hope this helped if you want solution here
Divide Both sides of the equation by -1.3: z+7=-3
Move the constant to the right - hand side and change its sign: z=-3-7
Calculate the difference: z=-10
And that’s the answer z=-10

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16-03-2021

Z + 7 = -3.9 + 1.3
Z + 7 = -2.6 or -3
Z = -2.6 - 7 or -3 - 7
Z= -9.6 or -10

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